Jiangyin Jiangnan Metal Co., Ltd. Open-die forging factory since 2008 ISO 9001:2015. EN 10204 3.1 / 3.2 Tel and WhatsApp 0086-189-2135-9659 sales@steelforgepieces.com
Jiangyin Jiangnan Metal Co., Ltd. Open-die forgings and seamless rolled rings. Jiangyin, Jiangsu, China

Werkstoff-Nr. / EN material number

1.0425

P265GH

EN 10222-2forgings for pressure purposes EN 10028-2plate. EN 10216-2 seamless tube DIN 17155 HIIsuperseded designation

Forged in this grade: seamless rolled rings, discs and tube sheets, flanges and girth flanges, shafts, sleeves, bushes and hollow bars, blocks, valve bodies, bonnets and stems, nozzles and channel covers.

1.0425 (P265GH) Open-Die Forgings to EN 10222-2

Chemical composition, mechanical properties, elevated-temperature limits, cross-standard equivalents and forged size capability for P265GH open-die forgings.

What is 1.0425 (P265GH) steel?

1.0425 is the EN material number for P265GH, a weldable non-alloy carbon steel for pressure purposes with specified elevated-temperature properties. Minimum yield strength is 265 MPa and tensile strength is 410 to 530 MPa. It is used for continuous service up to about 400 °C. Forgings in this grade are covered by EN 10222-2. The same grade appears in EN 10028-2 for plate and EN 10216-2 for seamless tube.

Jiangyin Jiangnan Metal Co., Ltd. is an open-die forging factory at No.1 Chengxiqiao Road, Zhouzhuang Town, Jiangyin City, Jiangsu Province, China. It has forged pressure-grade carbon and alloy steels since 2008 and produces 1.0425 / P265GH seamless rolled rings, discs, tube sheets, flanges, shafts, sleeves, blocks and valve components to customer drawings, normalised, ultrasonically tested and certified to EN 10204 3.1 or 3.2. Enquiries go to sales@steelforgepieces.com or 0086-189-2135-9659.

1.0425 / P265GH summary data

EN material number
1.0425
EN designation
P265GH
Standard for forgings
EN 10222-2
Material class
Non-alloy pressure steel
Minimum yield, ReH
265 MPa
Tensile strength, Rm
410 to 530 MPa
Carbon, max
0.20 %
Delivery condition
Normalised (+N)
Continuous service
About 400 °C (752 °F)
Weldability
Good. CEV usually 0.43 or below
Certification
EN 10204 3.1 / 3.2
Minimum order
1 piece

Compiled by Jiangyin Jiangnan Metal Co., Ltd. from EN 10222-2 and EN 10028-2. These are specification minima rather than measured results. Every heat we ship carries its own mill certificate.

What the name P265GH means

The designation is not arbitrary. Reading it tells you most of what the grade is for before you open the standard.

How the designation P265GH decomposes under the EN 10027-1 naming rules.
ElementMeaning
PSteel for pressure purposes
265Minimum upper yield strength in MPa, at the reference thickness
GAdditional characteristic indicator
HSpecified properties at elevated temperature
1.0425Parallel numeric designation under EN 10027-2. The leading 1 means steel, and 04 places it in the non-alloy quality steel group

P265GH is therefore a pressure steel guaranteed to 265 MPa yield, with published property values at temperature. Carbon is capped at 0.20 %. Manganese carries most of the strength. Residual alloying is held down so the steel can be welded in the field without a special procedure on every joint.

Which standard applies to which product form

Most of the specification errors we see on this grade start here. P265GH appears in several EN standards and the property tables in them are not identical. Writing "P265GH to EN 10028-2" on a forged ring is wrong, because EN 10028-2 is a flat-product standard. For forgings the correct reference is EN 10222-2.

P265GH product forms and their governing EN standards The grade P265GH branches into four product forms: forgings under EN 10222-2, plate and sheet under EN 10028-2, seamless tube under EN 10216-2, and welded tube under EN 10217-2. P265GH 1.0425 Plate and sheet EN 10028-2, flat products for pressure purposes Forgings, what we supply EN 10222-2, ferritic steel forgings for pressure purposes Seamless tube EN 10216-2, elevated-temperature seamless tube Welded tube EN 10217-2, electric-welded, elevated temperature
P265GH (1.0425) is specified in four EN standards depending on product form. Diagram by Jiangyin Jiangnan Metal Co., Ltd.

What this means in practice. If your drawing cites EN 10028-2 but the part is a forged ring, most mills will still make it. The test regime, the thickness bands and the certified property values then come from the wrong table, and a third-party inspector can reject the certificate at witness. Send us the drawing and we will tell you which clause to cite before the purchase order goes out.

Chemical composition of 1.0425 (P265GH)

The composition below is the ladle-analysis envelope we forge to. Every heat is analysed spectrometrically and the result is printed on the mill certificate. Product analysis on the finished forging can be added on request.

Chemical composition of P265GH (1.0425), mass %, ladle analysis. Compiled by Jiangyin Jiangnan Metal Co., Ltd. from EN 10222-2 and EN 10028-2. Confirm against the current edition of the standard for contractual work.
ElementSymbol Limit (mass %)Why it is controlled
CarbonCmax 0.20Strength. Capped to keep the carbon equivalent low enough for field welding
SiliconSimax 0.40Deoxidiser. Capped because higher silicon raises the ductile-to-brittle transition temperature
ManganeseMn0.80 to 1.40Carries most of the strength and hardenability without hurting weldability
PhosphorusPmax 0.025Segregates to grain boundaries and embrittles on slow cooling
SulfurSmax 0.015Forms MnS stringers that elongate during forging and cut transverse toughness
ChromiumCrmax 0.30Residual
CopperCumax 0.30Residual
MolybdenumMomax 0.08Residual
NickelNimax 0.30Residual
NiobiumNbmax 0.020Micro-alloying limit
TitaniumTimax 0.03Micro-alloying limit
VanadiumVmax 0.02Micro-alloying limit
NitrogenNmax 0.012Free nitrogen embrittles. It is bound by aluminium
Aluminium, totalAlmin 0.020Grain refinement and nitrogen binding. The standard permits other nitrogen-binding elements as an alternative
Residual sumCr+Cu+Mo+Nimax 0.70Keeps total hardenability and carbon equivalent inside the weldable window

Only manganese has a genuine range in that table. The rest are ceilings. Keeping the residuals down is what makes the grade weldable, and it is why a nominally similar commodity carbon steel is not a safe substitute.

Mechanical properties at room temperature

Properties fall with section thickness. Thicker sections cool more slowly through normalising and finish with a coarser ferrite and pearlite structure. State your ruling section on the enquiry.

Minimum upper yield strength ReH of P265GH by nominal thickness, normalised (+N) condition, MPa. Source: Jiangyin Jiangnan Metal Co., Ltd., from EN 10028-2.
Nominal thickness (mm) up to 1616 to 40 40 to 6060 to 100 100 to 150150 to 250
ReH, min (MPa) 265255245 215200185
Tensile strength Rm of P265GH by nominal thickness, normalised (+N) condition, MPa. Source: Jiangyin Jiangnan Metal Co., Ltd., from EN 10028-2.
Nominal thickness (mm) up to 100100 to 150 150 to 250
Rm (MPa) 410 to 530400 to 530390 to 530
Ductility and impact toughness of P265GH, normalised condition. Source: Jiangyin Jiangnan Metal Co., Ltd.
PropertyOrientation Test temperatureMinimum
Elongation after fracture, ALongitudinal+20 °C23 %
Elongation after fracture, ATransverse+20 °C21 %
Impact energy, KVLongitudinal+20 °C47 J
Impact energy, KVLongitudinal0 °C40 J
Impact energy, KVLongitudinalminus 20 °C27 J
Impact energy, KVTransverse0 °C27 J
Hardness, typical as normalisedNot applicable+20 °C120 to 165 HBW

Transverse impact values below 0 °C, and impact testing at any temperature below minus 20 °C, are supplementary requirements. State them on the enquiry. They change the steel we buy, not only the test we run.

Elevated-temperature behaviour and service limits

The H in the designation is why this grade gets specified instead of a structural carbon steel. Proof strength at temperature is tabulated in the standard, so a designer can calculate an allowable stress rather than apply a knock-down factor.

P265GH is used for continuous service up to about 400 °C. Tube applications are sometimes taken to a wall temperature near 450 °C. Above roughly 400 °C the governing failure mechanism becomes time-dependent creep, and the grade is outside its design envelope for long-duration service.

Design values. Minimum 0.2 % proof strength at temperature (Rp0,2) is tabulated in EN 10028-2 and EN 10222-2 by thickness band. Those tables are revised between editions and vary with section, so we do not reproduce them here as design data. Tell us your design temperature and ruling section and our engineering team will send the applicable Rp0,2 values from the edition your project is coded to, in writing, before you commit to a wall thickness.

Above 400 °C: what to specify instead

If your process runs hotter, move to a creep-resistant grade rather than adding wall thickness. We forge all of the following.

  • 16Mo3 (1.5415). The molybdenum addition extends useful service to roughly 530 °C.
  • 13CrMo4-5 (1.7335). Chromium and molybdenum for sustained high-temperature steam, to roughly 580 °C.
  • 10CrMo9-10 (1.7380). Heavy-wall boiler and superheater components, to roughly 600 °C.
  • X10CrMoVNb9-1 (P91 / 1.4903). Supercritical power plant service, to roughly 620 °C.

Heat treatment and delivery condition

The default delivery condition for 1.0425 forgings is normalised (+N). That is what EN 10222-2 assumes and what the property tables above are certified against.

Heat treatment practice for 1.0425 (P265GH) forgings at Jiangyin Jiangnan Metal Co., Ltd. Cycles are adjusted to ruling section and confirmed on the furnace chart supplied with the certificate.
OperationTypical parametersPurpose
Normalising890 to 950 °C, soak by section, still-air coolRefines the as-forged grain to a uniform ferrite and pearlite structure and sets the certified properties
Normalising and temperingNormalise, then temper 580 to 680 °CHeavy sections and hardness-controlled orders. Evens out core properties
Stress relief or simulated PWHT580 to 620 °C, about 1 h per 25 mmUsed where the customer's fabrication will impose PWHT and wants properties certified after it
Quench and temperOn request, tempering above 600 °CNot the EN 10222-2 default. Specify it on the order with the target hardness or yield band

Ask for simulated PWHT if you will heat-treat after welding. If your fabrication applies post-weld heat treatment, what matters is the forging's properties after your PWHT rather than its properties on the day it left our furnace. We can run test coupons through a simulated PWHT cycle matching your WPS and certify against that. It adds a few days to the schedule and avoids an argument at final inspection.

Weldability, preheat and PWHT

1.0425 is one of the more forgiving pressure grades to weld. Using the IIW formula CEV = C + Mn/6 + (Cr+Mo+V)/5 + (Ni+Cu)/15, the carbon equivalent usually lands between 0.35 and 0.43 within the specified chemistry envelope.

  • Processes. SMAW, GTAW, GMAW, SAW and FCAW are all routinely used.
  • Preheat. Generally not required below about 30 mm section. Above that, 100 to 150 °C is common practice. Consult your WPS and the applicable fabrication code.
  • PWHT. Typically required by code above roughly 35 mm, at 580 to 620 °C for about one hour per 25 mm of thickness.
  • Hydrogen control. Use low-hydrogen consumables and keep them dry. The grade is not especially crack-sensitive, but heavy restrained joints in thick sections deserve the same discipline as any other pressure weld.

If you need the CEV of the specific heat before qualifying a procedure, ask for it at order stage. We will report the calculated CEV on the mill certificate alongside the ladle analysis.

Cross-standard equivalents for 1.0425 / P265GH

There is no exact one-to-one equivalent for P265GH in ASTM or any other system. Chemistry ceilings, test orientations, thickness bands and delivery conditions all differ. The table below lists the grades treated as practical alternatives in international procurement, together with the difference that actually matters.

Comparable grades to P265GH (1.0425). Compiled by Jiangyin Jiangnan Metal Co., Ltd. from published standards. These are comparisons, not permission to substitute. Verify against your project code before accepting any swap.
System or regionComparable grade Product formKey difference from P265GH
EN (Europe)P265GH / 1.0425Forgings, plate, tubeThe reference grade itself
DIN (legacy, Germany)HII (DIN 17155)PlateSuperseded designation. New orders should cite the EN grade
ASTM / ASME (USA)A516 Gr. 60 / SA-516 Gr. 60PlateClosest strength and service match, but a plate specification with its own chemistry and test rules
ASTM / ASME (USA)A105 / SA-105ForgingsOften proposed as the forging equivalent, but permits carbon up to 0.35 %, far above the 0.20 % ceiling of P265GH. Not interchangeable on chemistry
ASTM / ASME (USA)A266 Class 1ForgingsCarbon steel pressure-vessel forging grade with different property bands and test regime
GB (China)Q245R (GB/T 713), formerly 20gPlateVery close in strength and intended service. The domestic Chinese pressure-vessel counterpart
JIS (Japan)SB410 / SGV410PlateComparable tensile band with differing impact requirements
GOST (Russia and EAEU)20KPlate and forgingsDifferent impact test temperatures and specimen orientation rules
BS (legacy, UK)BS 1501-224PlateWithdrawn and replaced by the EN 10028 series

A105 substitution. A105 is the grade most often proposed in place of P265GH forgings, since both are carbon steel forgings for pressure service. A105 allows 0.35 % carbon and P265GH allows 0.20 %. A part made to A105 chemistry can fail a P265GH acceptance test outright, while material made to P265GH will normally satisfy A105 chemistry. The substitution only works in one direction, and mechanical testing still has to be repeated to the receiving standard. We regularly supply dual-certified forgings on a single certificate where both specifications can genuinely be met.

P235GH, P265GH, P280GH and P355GH compared

These four grades sit on one strength ladder. Choosing between them is usually a question of wall thickness economics against weldability.

The GH family of pressure-purpose carbon steels compared. Compiled by Jiangyin Jiangnan Metal Co., Ltd. Values are specification minima at the reference thickness.
PropertyP235GH
1.0345
P265GH
1.0425
P280GH
1.0426
P355GH
1.0473
Min. yield ReH235 MPa265 MPa280 MPa355 MPa
Tensile Rm360 to 500 MPa410 to 530 MPa460 to 580 MPa510 to 650 MPa
Carbon, max0.16 %0.20 %0.20 %0.22 %
Manganese0.60 to 1.20 %0.80 to 1.40 %0.90 to 1.50 %1.10 to 1.70 %
Continuous serviceAbout 400 °CAbout 400 °CAbout 400 °CAbout 400 °C
WeldabilityExcellentGoodGoodGood, preheat more often required
Typical useLow-pressure vessels, general boiler partsMedium-pressure vessels, heat exchanger parts, valve bodiesHeavier pressure vessels, oil and gas fittingsThick-wall reactors, high-pressure heat exchangers

In practice most buyers start at P265GH. P235GH is worth considering when weldability dominates and wall thickness is not driving cost. P355GH becomes worthwhile once the calculated wall at P265GH makes the vessel heavy enough that the extra material cost exceeds the alloy premium. All four are available from us as open-die forgings. See our carbon steel forging grades.

Forged products we make in 1.0425 (P265GH)

Everything below is open-die forged or ring-rolled to the customer's drawing. We hold no standard catalogue parts in this grade. Each order is made to specification.

Seamless rolled rings and flanges

Seamless rolled rings, contoured rolled rings, forged flanges, girth flanges, cover flanges, long welding neck flanges, FVC-type self-reinforced nozzles, nozzle necks and gear ring blanks.

Discs, tube sheets and blocks

Forged discs and disks, tube sheets, tube plates, blind flanges, channel covers, forged blocks and die blocks.

Shafts, bars and cylinders

Forged round bars, flat bars, square bars, step shafts, plain shafts, cylinders, hubs and housings.

Sleeves, bushes, hollow bars and shells

Forged sleeves, bushes and bushings, hollow bars, barrels, casings, cases, shells and pipe or tube blanks for pressure service.

Valve and pump components

Valve bodies and body blocks, bonnets, stems, closures, seat rings, valve discs, and pump casings, covers and housings.

Shell-and-tube heat exchanger parts

Complete forged component sets for shell-and-tube heat exchangers: tube sheets, girth flanges, channel covers, shells, nozzles and cover plates in matched heats.

Size and weight capability

Our open-die shop, ring mill, heat treatment furnaces and machining bays are on one site in Jiangyin. A part does not move between companies between forging and final inspection.

1.0425 (P265GH) forged size capability at Jiangyin Jiangnan Metal Co., Ltd. Confirm your specific geometry with our engineering team before designing to the limit.
Product formSize rangeProcess
Seamless rolled ringsOutside diameter up to 2,500 mmRing rolling
Shafts and round barsLength up to 8,000 mmOpen-die forging
Discs, tube sheets, blocksTo drawing. State diameter and ruling thicknessUpset and open-die forging
Sleeves, hollow bars, shellsTo drawing. State OD, ID and wallOpen-die forging over a mandrel
Minimum order quantity1 piece, including prototypes and one-offsNot applicable
MachiningRough machined, semi-finished or finish machined to drawingIn-house CNC

How we forge a 1.0425 part

  1. Drawing and specification review. Before quoting, our engineers check the cited standard against the product form, flag any conflict between the drawing and the applicable code, and confirm the ruling section that will govern the property tables. There is no charge for this review.
  2. Steelmaking and refining. Electric arc or basic oxygen melting, followed by ladle refining to bring the analysis inside the P265GH envelope with margin on carbon and sulfur rather than sitting at the ceiling.
  3. Ingot or billet, with traceability. A heat number is assigned and carried through every subsequent operation to the shipping mark on the finished part.
  4. Open-die forging or ring rolling. The billet is heated into the hot-working range and worked with a controlled forging ratio so grain flow follows the part contour instead of being machined through. Final passes are completed above the recrystallisation temperature.
  5. Normalising. 890 to 950 °C, soaked by section, still-air cooled, on a recorded furnace chart supplied with the certificate.
  6. Machining. Rough, semi-finish or finish machining in-house to the drawing tolerance and surface finish you specify.
  7. Testing, NDT and certification. Chemistry, tensile, impact and hardness testing, ultrasonic and magnetic particle examination as required, a dimensional report, and issue of the EN 10204 3.1 or 3.2 certificate.

Inspection, NDT and certification

Jiangyin Jiangnan Metal Co., Ltd. holds ISO 9001:2015 certification and issues EN 10204 3.1 certificates as standard on 1.0425 forgings. EN 10204 3.2 certificates witnessed by a third party such as Bureau Veritas, SGS, TÜV, DNV or Lloyd's Register are available on request.

Testing applied to 1.0425 (P265GH) forgings and the standards we test to.
TestStandardScope
Chemical analysisASTM A751, spectrometricEvery heat, ladle analysis. Product analysis on request
Tensile testISO 6892-1 / ASTM A370Rm, ReH, elongation, reduction of area
Charpy V-notch impactISO 148-1 / ASTM A370At the specified temperature and orientation
HardnessASTM E10 / E18Brinell or Rockwell, with mapping on request
Ultrasonic testingISO 9712 or SNT-TC-1A qualified operatorsVolumetric examination to the acceptance class you specify
Magnetic particle and penetrantISO 9712 or SNT-TC-1ASurface examination of machined faces
Grain sizeASTM E112On request. Micrograph supplied with the 3.1 certificate
Dimensional reportTo drawingEvery piece, serial-numbered

Applications and industries

  • Pressure vessels and boilers. Shells, tube sheets, girth flanges, channel covers, manway and nozzle forgings for fired and unfired pressure equipment.
  • Shell-and-tube heat exchangers. The largest end use we see for this grade, usually as matched sets of tube sheets, girth flanges and channel covers.
  • Industrial valves. Bodies, bonnets, stems, closures and seat rings for gate, globe, check and ball valves in moderate-temperature service.
  • Oil, gas and petrochemical process plant. Pipeline fittings, separator and column components, and forged blanks for process equipment.
  • Power generation. Feedwater heaters, deaerators, condenser and heat exchanger components in thermal plant.
  • General chemical processing. Reactor and vessel components where service temperature stays inside the 400 °C envelope.

How to specify 1.0425 forgings on an enquiry

We can quote a firm price and delivery date from six lines of information. Anything missing usually means another round of emails before the job can be priced.

  1. Grade and standard, matched to the product form. P265GH to EN 10222-2 for a forging. Add a second standard if the part must be dual certified.
  2. Drawing or dimensions, with the ruling section marked. The thickness that governs the property table is the one we certify against. Mark it rather than leaving us to infer it.
  3. Delivery condition and machining state. Normalised as forged, rough machined, or finish machined, plus the surface finish if it matters.
  4. Test requirements beyond the standard. Impact temperature and orientation, hardness limits, simulated PWHT, product analysis and grain size all have to be stated before we buy the steel.
  5. NDT and acceptance class. Which examinations, to which acceptance standard, and whether a third party witnesses them.
  6. Certification level and quantity. EN 10204 3.1 or 3.2, and the number of pieces including any spares.

Send that to sales@steelforgepieces.com and you will normally have a quotation within one to two working days.

Five specification mistakes we see on 1.0425 enquiries

1. Citing EN 10028-2 on a forging

EN 10028-2 is a flat-product standard. For forgings the correct reference is EN 10222-2. The grade name is the same. The test regime is not.

2. Leaving the ruling section unstated

Minimum yield falls from 265 MPa to 185 MPa across the thickness bands. A drawing that does not identify which section governs invites a certificate that complies technically but does not meet the designer's assumption.

3. Assuming A105 and P265GH are interchangeable

They are not interchangeable, and the direction of the error matters. See the note under cross-standard equivalents.

4. Adding low-temperature impact requirements after the order

Impact testing below minus 20 °C cannot be bolted on at the end. It changes the steel purchase and sometimes the heat treatment route. Raise it at enquiry stage or expect a schedule impact.

5. Specifying P265GH for service above 400 °C

Above roughly 400 °C creep governs and the grade sits outside its qualified envelope for long-term service. Move to 16Mo3 or a chromium-molybdenum grade instead of adding wall.

Frequently asked questions about 1.0425 (P265GH)

What is 1.0425 steel?

1.0425 is the EN material number for P265GH, a weldable non-alloy carbon steel for pressure purposes with specified elevated-temperature properties. Minimum yield strength is 265 MPa, tensile strength is 410 to 530 MPa, and it is used for continuous service up to about 400 °C. Jiangyin Jiangnan Metal Co., Ltd. forges it into rings, discs, flanges, shafts and bars to EN 10222-2.

Is 1.0425 the same as P265GH?

Yes. 1.0425 is the numeric designation under EN 10027-2 and P265GH is the alphanumeric designation under EN 10027-1 for the same steel. Both appear on the mill certificate.

Which standard covers P265GH forgings?

EN 10222-2, steel forgings for pressure purposes, ferritic and martensitic steels with specified elevated temperature properties. EN 10028-2 covers the same grade as plate, EN 10216-2 as seamless tube and EN 10217-2 as welded tube. Cite the standard that matches your product form.

What is the chemical composition of 1.0425?

Carbon max 0.20 %, silicon max 0.40 %, manganese 0.80 to 1.40 %, phosphorus max 0.025 %, sulfur max 0.015 %, chromium max 0.30 %, copper max 0.30 %, molybdenum max 0.08 %, nickel max 0.30 %, with Cr+Cu+Mo+Ni held below 0.70 % and aluminium added for grain refinement. Iron is the balance.

What is the maximum service temperature of P265GH?

About 400 °C for continuous pressure service. Tube applications are sometimes taken to a wall temperature near 450 °C. Above 400 °C creep becomes the governing mechanism and a creep-resistant grade such as 16Mo3 (1.5415) or 13CrMo4-5 (1.7335) should be used instead.

What is the ASTM equivalent of P265GH?

There is no exact equivalent. ASTM A516 Grade 60 is the closest match in strength and intended service, but it is a plate specification. ASTM A105 is often proposed for forgings, yet it permits carbon up to 0.35 % against the 0.20 % ceiling of P265GH, so the two are not interchangeable. Verify against your project code before substituting.

Is P265GH easy to weld?

Yes. Its carbon equivalent usually falls between 0.35 and 0.43, so it welds with SMAW, GTAW, GMAW, SAW and FCAW. Preheat is generally unnecessary below about 30 mm section. Above that, 100 to 150 °C is common. Post-weld heat treatment at 580 to 620 °C is normally required by code above roughly 35 mm.

What heat treatment is applied to 1.0425 forgings?

Normalising at 890 to 950 °C followed by still-air cooling is the default, and it is the condition the certified properties are based on. Normalising plus tempering at 580 to 680 °C is used for heavy sections and hardness-controlled orders. Quench and temper is available on request but is not the EN 10222-2 default and must be stated on the purchase order.

What is the difference between P265GH and P280GH?

Minimum yield strength and manganese content. P265GH (1.0425) is specified at 265 MPa minimum yield with 0.80 to 1.40 % manganese. P280GH (1.0426) is specified at 280 MPa with 0.90 to 1.50 % manganese and a higher tensile band of 460 to 580 MPa. Both are used to about 400 °C. P280GH allows a slightly thinner wall on heavier pressure parts.

Can you forge 1.0425 to our drawing?

Yes. Every 1.0425 part we make is open-die forged or ring-rolled to the customer's drawing, and we hold no standard catalogue parts in this grade. Minimum order is one piece. Send the drawing to sales@steelforgepieces.com and our engineers will review the specification and return a quotation, normally within one to two working days.

What size 1.0425 forgings can you make?

Seamless rolled rings up to 2,500 mm outside diameter and shafts up to 8,000 mm long. Discs, tube sheets, sleeves, hollow bars and blocks are made to drawing. Confirm your specific geometry with our engineering team before designing to the limit.

What certification do you supply with 1.0425 forgings?

EN 10204 3.1 mill test certificates as standard, covering heat number, ladle analysis, mechanical test results, heat treatment records and NDT reports. EN 10204 3.2 certificates witnessed by Bureau Veritas, SGS, TÜV, DNV or Lloyd's Register are available on request. Jiangyin Jiangnan Metal Co., Ltd. is certified to ISO 9001:2015.

Is P265GH suitable for sour service?

Not by default. Standard P265GH to EN 10222-2 carries no NACE qualification. For wet H₂S service, NACE MR0175 and ISO 15156 compliance must be specified at enquiry stage, which adds restricted sulfur, inclusion shape control, a hardness ceiling and supplementary HIC and SSC testing. Tell us the service environment and we will quote the compliant route.

Can P265GH be used at low temperatures?

Down to about minus 20 °C with the standard impact requirement. Below that, supplementary impact testing at the minimum design temperature must be specified, or a grade selected specifically for low-temperature toughness such as P285NH or P355NL2. Raise low-temperature requirements before the steel is purchased.

Where is 1.0425 forged?

Jiangyin Jiangnan Metal Co., Ltd. forges 1.0425 (P265GH) at its open-die plant at No.1 Chengxiqiao Road, Zhouzhuang Town, Jiangyin City, Jiangsu Province, China. Forging, heat treatment, machining and inspection are carried out on one site. Contact 0086-189-2135-9659 or sales@steelforgepieces.com.

Request a quotation for 1.0425 (P265GH) forgings

Send your drawing, the standard you are coded to, the ruling section and the quantity. Our engineering team reviews the specification before quoting, at no cost, and will tell you if the grade or the cited standard is wrong for the application before you place an order.

Jiangyin Jiangnan Metal Co., Ltd.
Open-die forging factory. Established 2008. ISO 9001:2015
No.1 Chengxiqiao Road, Zhouzhuang Town, Jiangyin City, Jiangsu Province, China
Telephone and WhatsApp: 0086-189-2135-9659
Email: sales@steelforgepieces.com
Web: www.steelforgepieces.com