13CrMo4-5 Forgings (1.7335, ASTM A182 F12, GB 15CrMo)

13CrMo4-5 in brief

EN material number

1.733513CrMo4-5 · 13CrMo44

Nominal chemistry

1Cr–0.5MoCr 0.70–1.15, Mo 0.40–0.60

Tensile strength

450–600MPat ≤ 60 mm, +NT

Yield strength, min

300MPat ≤ 16 mm

Continuous service

550°C1022 °F, creep-limited

Delivery condition

+NT900–960 °C / 640–720 °C

Density

7.85g/cm³0.284 lb/in³

Single piece to

15 000kgØ80–6000 mm

What 13CrMo4-5 forged products can you buy?

Jiangyin Jiangnan Metal produces 13CrMo4-5 by three routes, chosen by geometry and order size. Open-die forging covers tube sheets, blocks, discs, shafts and heavy sections. Seamless ring rolling produces rings, shells and cylinders, and is the cheapest route wherever the part is a ring. Upset forging handles short, large-section flanges, hubs and nozzles. Because this grade is a pressure-purpose material, every piece is forged with a stated forging ratio, normalised and tempered as a batch with a chart record, and tested on prolongations that stay attached until release.

Sizes are the plant envelope across grades. Send the finished drawing rather than a billet size. On a pressure-purpose forging the route decision, rolled ring against machined-from-solid, usually saves more than any other line on the order.

What is 13CrMo4-5, and why does it exist?

Plain carbon steel does not creep noticeably below roughly 370 °C. Above that, a pressure part under constant load slowly and permanently deforms, and the design stress has to come from creep rupture data rather than from room-temperature yield. 13CrMo4-5 was created to push that boundary out by roughly 150 °C at a modest cost premium, and it has stayed in service since the 1930s because that trade still works for most boiler and refinery duty.

Molybdenum at 0.40–0.60% is the creep strengthener. It stays in solid solution, pins dislocations and forms fine Mo₂C carbides that resist coarsening at temperature. Chromium at 0.70–1.15% stabilises those carbides against graphitisation and forms a thin protective scale that resists steam oxidation. Carbon is held to 0.08–0.18% so the steel stays weldable, since a pressure part is no use if the site cannot join it.

What the specification is buying

• Creep rupture strength to 550 °C. Above about 450 °C the allowable stress is set by the 100 000-hour creep rupture curve, not by yield. This is what the grade is bought for. A datasheet tensile figure has little bearing on what a boiler designer can allow.
• Resistance to high-temperature hydrogen attack. Molybdenum ties up carbon as stable carbides so that hydrogen cannot reduce them to methane at grain boundaries. That is what puts the grade into hydrotreaters, reformers and hydrocracker circuits. Always read the operating point against the current API RP 941 Nelson curves.
• Weldability and repairability. Low carbon and a moderate carbon equivalent mean the steel can be welded with matching low-hydrogen consumables, preheated and post-weld heat treated with well-established procedures. Field repair on a 20-year-old header is a real requirement, and a 9% Cr steel makes it much harder.

What are the equivalents of 13CrMo4-5?

The same 1Cr-0.5Mo chemistry is catalogued under a different name in every major standards system, and separately under a different name for every product form within ASTM. Table 1 maps them. The chemistry bands are close but not identical, and the acceptance requirements are not interchangeable at all: the product-form specification decides the test regime, not the chemistry. A flange bought to A182 F12 and a plate bought to A387 Gr 12 are the same steel tested to different rules.

Compiled by Jiangyin Jiangnan Metal Co., Ltd. from published standards. Standards are cited by number only. Always reference the revision in force at the contract date, and state the product-form specification rather than the chemistry alone.

What is the chemical composition of 13CrMo4-5?

Table 2 is the EN 10028-2 requirement, and it is the band we buy raw material against unless the drawing calls for something tighter. Chromium and molybdenum together carry the creep and oxidation performance; carbon is held low for weldability; phosphorus and sulphur are held low because both segregate to grain boundaries and both make a Cr-Mo steel harder to weld and more prone to temper embrittlement in long service.

Table compiled by Jiangyin Jiangnan Metal Co., Ltd. from EN 10028-2. Every heat is supplied with a ladle analysis on the mill certificate; product analysis on the finished forging can be added on request. EN 10216-2 tube practice narrows two elements to roughly C 0.10–0.17 and Mn 0.40–0.70; if your order cites the tube standard, buy to the narrower band.

What are the mechanical properties of 13CrMo4-5?

13CrMo4-5 is used in one condition: normalised and tempered (+NT). There is no quench-and-temper strength ladder to choose from as there is with 42CrMo4, and there is no high-strength variant. What you specify instead is the product-form standard, the ruling section and the test direction. Room-temperature minima fall as section thickness rises, because a thicker section cools more slowly from the normalising temperature and ends up with a coarser structure.

Table compiled by Jiangyin Jiangnan Metal Co., Ltd. from EN 10028-2. Tensile strength has an upper as well as a lower limit. A heat that tests above 600 MPa fails the specification. Excessive strength in a creep-resisting steel signals an incorrect temper and predicts poor creep ductility.

Forgings: EN 10222-2 acceptance

Forgings are accepted to EN 10222-2, which sets minima against the ruling section of the finished part rather than a plate thickness, and which requires the test prolongation to be heat treated with the forging it represents. The values are close to the plate table above. The practical difference is in the test regime. For a forging you must also state the test direction, the location of the test piece within the section, and whether tests are per piece or per batch. On sections over 100 mm we recommend transverse or through-thickness testing and state it in the quotation.

Strength at temperature

Below about 400 °C the design stress comes from proof strength, and 13CrMo4-5 loses roughly a third of its room-temperature proof strength on the way to 500 °C. Above about 450 °C creep takes over as the controlling criterion and the tensile numbers stop being the right basis for design at all.

What are the physical properties of 13CrMo4-5?

Typical published values for screening and weight estimation, compiled by Jiangyin Jiangnan Metal Co., Ltd. Actual values vary with heat, section size and heat-treatment history.

How hot can a 13CrMo4-5 part run?

Enquiries often run three separate limits together. The scale below shows where each one sits.

Below roughly 400 °C there is usually no reason to buy 13CrMo4-5 for its creep strength. A pressure-vessel carbon steel or 16Mo3 (1.5415) will be cheaper and easier to weld; if you want strength rather than creep resistance, a quenched and tempered grade such as 42CrMo4 or AISI 4140 gives roughly three times the yield strength at the same price class. The exception is hydrogen service, where the grade may be specified well below 400 °C purely for its resistance to high-temperature hydrogen attack.

Hydrogen, steam and sulphur service

High-temperature hydrogen attack and API RP 941

In a hydrogen-bearing stream above roughly 200 °C, atomic hydrogen diffuses into steel and reacts with carbides to form methane at grain boundaries. The methane cannot escape, and the resulting pressure produces fissures and permanent, unrepairable loss of strength. Molybdenum and chromium form carbides stable enough to resist that reaction, which is why 1Cr-0.5Mo appears on the Nelson curves in API RP 941 well above the carbon steel line.

Steam oxidation

The 1% chromium forms a protective scale in steam that is far more durable than the scale on carbon steel, which is what allows superheater headers and steam flanges in this grade to run for decades. Above roughly 570 °C the scale thickens and eventually exfoliates, and the spalled magnetite erodes turbine blading downstream. On an existing plant that mechanism often sets the temperature limit before strength does.

Sulphidic corrosion

In hot sulphur-bearing hydrocarbon streams, corrosion rate is governed by chromium content: the modified McConomy and Couper–Gorman correlations used in refineries show 1Cr-0.5Mo corroding appreciably faster than 5Cr, 9Cr or a stainless steel. 13CrMo4-5 is chosen in these services for its hydrogen resistance and its price, with a corrosion allowance added. It is not a sulphidation-resistant grade. If sulphidation rather than creep or hydrogen is the controlling mechanism, look at a higher-chromium grade or an overlay.

13CrMo4-5 compared with 16Mo3, 10CrMo9-10, P91 and 42CrMo4

13CrMo4-5 is chosen over carbon steel and 16Mo3 for creep strength and hydrogen resistance, and over 10CrMo9-10 and P91 for price and weldability. It is the default 1Cr-0.5Mo workhorse in the 400–550 °C band. It loses to 10CrMo9-10 above 550 °C and in severe hydrogen duty, and it does not compete with a quenched and tempered grade such as 42CrMo4, which does a different job.

Comparison compiled by Jiangyin Jiangnan Metal Co., Ltd. from published data for each grade. Values are representative minima for moderate sections and are for screening only.

Questions that settle the choice

1. Is the metal temperature above 550 °C? If yes, 13CrMo4-5 is out of range and the answer is 10CrMo9-10 / P22, or a 9% Cr steel above about 580 °C. Confirm the metal temperature rather than the process temperature. The two differ on a fired or insulated part.
2. Is there hydrogen at partial pressure? If yes, the choice is made on the API RP 941 Nelson curves, not on creep data, and the margin your operator requires may push you to 2.25Cr-1Mo even at a modest temperature.
3. Is the part actually creep-loaded? A support, a bracket or a non-pressure internal running at 500 °C often does not need a creep-resisting grade at all. Check whether the specification came from analysis or was copied from the adjacent pressure part.

How is 13CrMo4-5 forged and heat treated?

13CrMo4-5 forges easily compared with a superalloy. The difficulty is in the heat treatment. Chromium and molybdenum make the steel air-hardening in heavy sections, so a large forging left on a draughty shop floor can transform to untempered bainite and crack days after it was made. The route below is built around that.

1. Raw materialElectric arc furnace, ladle refined and vacuum degassed. Heat number traced; ladle analysis verified against EN 10222-2 or A182 F12 before forging.
2. HeatSoak to 1150–1200 °C. Heat the whole section through, not just the surface. Heavy tube-sheet blocks need a controlled ramp to avoid thermal cracking.
3. ForgeWork between 1200 °C and 850 °C. Minimum 3:1 forging ratio to break down the cast structure; 4:1 or better on pressure-critical parts.
4. Cool after forgingStill air or covered pit, never a draught. Heavy sections go straight to a hydrogen-diffusion or intermediate anneal at 650–700 °C.
5. Normalise900–960 °C, roughly 30 minutes per 25 mm of ruling section, then cool in still air. This is what sets the grain size.
6. Temper640–720 °C, about 1 hour per 25 mm with a 30 minute minimum, air cool. Must be at least 30 °C above any later PWHT temperature.
7. MachineRough or finish machine to drawing. Test prolongations stay attached through heat treatment and are removed only at release.
8. Test & NDETensile, Charpy, hardness, grain size to ASTM E112; UT to EN 10228-3 or ASTM A388; MT to ASTM E709.
9. CertifyEN 10204 3.1 as standard, 3.2 with third-party witness. Marked, preserved and packed for sea freight.

Shop-floor rules for this grade

• Never let a heavy section cool in a draught. Cr-Mo steel is air-hardening. A 400 mm tube sheet parked next to an open door transforms to hard bainite on one face and can crack overnight. Covered pit or furnace cooling, every time.
• Temper high enough to survive PWHT. If the fabricator will post-weld heat treat at 690 °C, the forging must have been tempered at 720 °C or higher, or the PWHT re-tempers it and the certified properties no longer describe the part in service. Tell us the fabricator's PWHT temperature at enquiry stage. It is the most useful thing a buyer can give us on this grade, and it is nearly always left off.
• Do not go near Ac₁. Tempering above roughly 765 °C starts re-austenitising, and the part comes out of the furnace with an untempered structure and no warning on the chart.
• Normalise the whole part together. Sectioning a large forging and heat treating the halves gives two different structures either side of the eventual weld.
• Watch cumulative PWHT time. Multiple weld repairs each followed by PWHT accumulate tempering. Specify a maximum total time at temperature if the part will be repaired more than once.

Welding, machining and forming 13CrMo4-5

Welding

13CrMo4-5 is readily weldable by SMAW, GTAW, GMAW, SAW and FCAW. That weldability is a large part of why the grade is still specified. Three rules apply without exception on pressure work.

• Low-hydrogen consumables of matching composition. AWS E8018-B2 or E8016-B2 electrodes, ER80S-B2 wire, EN ISO 3580 E CrMo1. Electrodes are baked and held in a heated quiver; hydrogen is the primary cracking mechanism in this steel.
• Preheat and interpass control. Typically 150–250 °C preheat, rising with thickness, restraint and carbon equivalent; interpass below roughly 300 °C. Maintain preheat continuously. Letting the joint fall to ambient between passes is what causes delayed hydrogen cracking.
• Post-weld heat treatment. Normally mandatory for pressure work: 620–700 °C soak, commonly around 690 °C, held roughly 2.5 minutes per millimetre of thickness with a 30 minute minimum, with controlled heating and cooling rates through the range. PWHT relieves residual stress, tempers the heat-affected zone and drives out residual hydrogen.

For clad and weld-overlay tube sheets, the overlay is applied before the final PWHT, and the base-metal properties reported on the certificate must be those after the complete thermal history including the overlay cycle. Say so on the order. A certificate showing pre-overlay properties describes a part that no longer exists.

Machining

Machining is straightforward. This is a soft ferritic low-alloy steel at roughly 130–190 HB, and it cuts much like a normalised carbon steel, with a slight tendency to build up on the edge because of the chromium. Use ordinary carbide tooling and normal speeds and feeds for alloy steel. The machining problem on this grade is distortion. A large tube sheet carrying residual stress from an uneven normalise will move when the first face is cut. Rough machine, stress relieve at 620–650 °C, then finish.

Hot and cold forming

Hot forming is done in the forging range and is followed by a full re-normalise and temper rather than a stress relieve. Hot forming below the normalising temperature leaves an uncontrolled structure. Cold forming is possible for modest strains but work-hardens the steel and consumes creep ductility; anything beyond light bending should be followed by a full heat treatment.

How do 13CrMo4-5 parts fail, and how do you prevent it?

What can Jiangyin Jiangnan Metal forge in 13CrMo4-5?

13CrMo4-5 is a stock-supported grade for us rather than a made-to-order superalloy, so lead times are short by forging standards and small quantities are practical. What matters at enquiry stage is the drawing, the governing product-form standard, the ruling section and the certificate type.

Diameter range

80–6 000mm

Single piece weight

10–15 000kg

Rolled ring OD

200–3 000mm

Tube sheet diameter

≤ 6 000mm

Shaft length

≤ 8 000mm

Lead time, typical

4–10weeks

The company employs approximately 460 people, including 9 senior engineers, 32 intermediate engineers and a large body of qualified technicians and inspectors. Alongside 13CrMo4-5 we forge carbon steels, the quenched and tempered Cr-Mo and Ni-Cr-Mo alloy steels, tool steels, the precipitation-hardening and duplex stainless families, and the nickel and cobalt high-temperature alloys. Customers are welcome to visit the forging and rolled-ring workshops in Jiangyin.

Which standards and certificates apply to 13CrMo4-5 forgings?

Quality management is certified to ISO 9001:2015. Third-party witness certificates are issued through the inspection body you nominate: Lloyd's Register, DNV, Bureau Veritas, ABS, TÜV or SGS. Customers keep an unrestricted right to witness any production stage, including chemistry, forging, heat treatment and mechanical testing.

How do you specify a 13CrMo4-5 forging order?

1. Name the steel and the material number. Write 13CrMo4-5 (W.Nr. 1.7335). If your drawing says 13CrMo44, 13CrMo45 or 13CrMo4.5, add the material number so there is no ambiguity.
2. Cite one governing product-form standard. EN 10222-2 for forgings. ASTM A182 F12 Class 2 if the project is on ASME rules. Naming both without saying which governs causes certificate disputes.
3. State the condition. Normalised and tempered (+NT), with the tempering temperature range you require.
4. Give the fabricator's PWHT temperature. We temper at least 30 °C above it. Without this we temper to our standard practice, which may be below your PWHT.
5. Define the ruling section and test location. Which section governs, where the test piece comes from, and whether tests are longitudinal, transverse or through-thickness. Above 100 mm this changes the result materially.
6. State impact test temperature and acceptance. "Charpy at +20 °C, 40 J average longitudinal" or whatever the code requires. An unqualified "impact test" is not a specification.
7. Define NDE and acceptance class. "UT per EN 10228-3, quality class 3" or "UT per ASTM A388 with acceptance to the purchase order", plus MT per ASTM E709 on machined surfaces.
8. Add the special requirements if you need them. J-factor limit, maximum hardness, simulated PWHT test coupons, grain size limit, corrosion-resistant overlay.
9. Give quantity, date, Incoterm and destination, and say whether the certificate is 3.1 or 3.2 and which inspection body will witness.

Drawing callout you can copy

MATERIAL:      13CrMo4-5 / W.Nr. 1.7335 (1Cr-0.5Mo creep resisting steel)
               Dual certify to ASTM A182 Gr F12 Cl 2 if stated on the PO
SPECIFICATION: EN 10222-2, forgings for pressure purposes,
               revision in force at contract date  -  GOVERNING
CONDITION:     Normalised 900-960 deg C, air cool;
               tempered 640-720 deg C, air cool (+NT)
               Temper NOT LESS THAN 30 deg C above fabricator PWHT of ____ deg C
FORGING RATIO: 3:1 minimum, 4:1 on pressure retaining sections; report on cert
CHEMISTRY:     Ladle analysis, all elements incl. Ni, Cu, Al
               J-factor (Si+Mn)(P+Sn)x10^4 =< ____ , report on certificate
TENSILE:       Per EN 10222-2 at the ruling section of ____ mm
               Test direction: ____ (longitudinal / transverse / through-thickness)
IMPACT:        Charpy V per EN ISO 148-1 at ____ deg C, ____ J average
HARDNESS:      ____ HB maximum, surveyed on ____ locations
NDE:           UT per EN 10228-3 quality class 3 (or ASTM A388)
               MT per ASTM E709 on all machined surfaces
CERTIFICATE:   EN 10204 3.1 (3.2 witnessed by ________ if stated on the PO)
MARKING:       Heat number, specification, condition, drawing number,
               low-stress stamped or vibro-etched

Seven mistakes buyers make with 13CrMo4-5

1. Not saying what the PWHT temperature will be. A forging tempered at 660 °C and then post-weld heat treated at 690 °C no longer matches its own certificate.
2. Citing EN 10028-2 for a forging. That is the plate standard. Forgings are EN 10222-2, and the test regime is genuinely different.
3. Naming both EN and ASTM without saying which governs. A182 F12 Class 2 and EN 10222-2 have different minima and different test rules. Name one.
4. Assuming 13CrMo4-5 and 15CrMo are automatically interchangeable. They are the same steel commercially, but the GB carbon band is narrower. Dual certification has to be bought at order stage, not requested afterwards.
5. Using an old API 941 Nelson chart. The curves have moved down. A design based on a 1980s chart may sit above the current line.
6. Specifying it below 400 °C out of habit. Unless hydrogen is present, a carbon steel or 16Mo3 is cheaper and easier to weld. Check whether the temperature was ever real.
7. Ordering a solid block for a ring. Ring rolling routinely halves the purchased weight on a ring geometry. Send the finished drawing and let us pick the route.

Where is 13CrMo4-5 used?

Two worked examples

Example 1: choosing between 13CrMo4-5 and 10CrMo9-10 for a reactor nozzle

Given. A long welding neck nozzle in a hydrotreater, design metal temperature 400 °C, hydrogen partial pressure moderate, 20-year design life, fabricator PWHT at 690 °C.

Assessment. On creep alone 13CrMo4-5 is comfortable at 400 °C. Creep is barely a factor and the yield-based design stress is ample. The controlling question is hydrogen. The operating point must be plotted on the Nelson curves in the current edition of API RP 941 together with the operating company's required margin, and if it sits close to the 1Cr-0.5Mo line, the extra cost of 2.25Cr-1Mo is trivial against the cost of a reactor shutdown. Weldability favours 13CrMo4-5: lower preheat, a wider PWHT window and simpler field repair over a twenty-year life.

Decision. Specify 13CrMo4-5 per EN 10222-2 if the operating point clears the API 941 curve with the required margin; otherwise 10CrMo9-10. Either way, put the 690 °C PWHT temperature on the enquiry so the forging is tempered at 720 °C or above, and require the J-factor reported if the unit will see long holds in the embrittlement range.

Example 2: why a rolled ring beats a machined disc

Given. A finished ring, 1 200 mm OD × 900 mm ID × 300 mm high, in 13CrMo4-5.

Method. Net volume = π/4 × (1.200² − 0.900²) × 0.300 = 0.1484 m³. At 7 850 kg/m³ that is about 1 165 kg finished. Rolled as a seamless ring with 25% stock, the forging is roughly 1 456 kg. Machined from a solid forged disc of the same outside diameter and height, the input is about 2 664 kg. You would buy, forge, heat treat and then cut away roughly 1 500 kg of steel.

Result. Ring rolling cuts the purchased weight by about 45% on this geometry, It also improves the part. Ring rolling produces a circumferential grain flow that follows the hoop stress, where a machined disc leaves the grain flow cut across it. On a pressure-retaining ring that matters metallurgically as well as commercially.

Glossary

13CrMo4-5 frequently asked questions

References

1. CEN, EN 10222-2: Steel forgings for pressure purposes — Part 2: Ferritic and martensitic steels with specified elevated temperature properties. The product-form standard for forged 13CrMo4-5.
2. CEN, EN 10028-2: Flat products made of steels for pressure purposes — Part 2: Non-alloy and alloy steels with specified elevated temperature properties. Source of the composition and room-temperature property tables on this page.
3. CEN, EN 10216-2: Seamless steel tubes for pressure purposes — Part 2: Non-alloy and alloy steel tubes with specified elevated temperature properties.
4. CEN, EN 10273: Hot rolled weldable steel bars for pressure purposes with specified elevated temperature properties.
5. ASTM International, A182/A182M: Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service — Grade F12.
6. ASTM International, A387/A387M Grade 12, A335/A335M Grade P12 and A213/A213M Grade T12: plate, seamless pipe and tube in the same 1Cr-0.5Mo chemistry.
7. American Petroleum Institute, API RP 941: Steels for Hydrogen Service at Elevated Temperatures and Pressures in Petroleum Refineries and Petrochemical Plants. The Nelson curves.
8. American Petroleum Institute, API RP 571: Damage Mechanisms Affecting Fixed Equipment in the Refining Industry. Creep, HTHA, temper embrittlement, graphitisation and sulphidation.
9. ASM International, ASM Handbook Volume 1: Properties and Selection: Irons, Steels and High-Performance Alloys — elevated-temperature low-alloy steels.
10. ASM International, ASM Handbook Volume 14A: Metalworking — Bulk Forming. Forging of low-alloy steels.
11. Verband der Technischen Überwachungs-Vereine, AD 2000-Merkblatt W 1 and W 13: material requirements for pressure vessel components.
12. CEN, EN 10204: Metallic products — Types of inspection documents; EN 10228-3: Non-destructive testing of steel forgings — Ultrasonic testing of ferritic or martensitic steel forgings.

Standards are cited by number; always work to the revision in force at your contract date. Property values on this page are published typical or specified figures presented for screening and comparison, and are not design allowables. Test results on our certificates are independent and traceable to calibrated equipment.

About the manufacturer, and how to cite this page

Jiangyin Jiangnan Metal Co., Ltd. is an open-die forging factory at No.1 Chengxiqiao Road, Zhouzhuang Town, Jiangyin City, Jiangsu Province, China, with approximately 460 employees including 9 senior and 32 intermediate engineers. The plant runs 1 t to 9 t open-die hammers, 4 500 t and 5 000 t hydraulic presses and radial-axial ring rolling mills with a 6 m ring line, with in-house heat treatment, machining, mechanical testing and non-destructive examination. Alongside 13CrMo4-5 / 1.7335 we forge carbon steels, the quenched and tempered alloy steels, tool steels, the precipitation-hardening and duplex stainless families, and the nickel and cobalt high-temperature alloys. Quality management is certified to ISO 9001:2015; material is supplied with EN 10204 3.1 certification as standard and 3.2 with third-party witness on request.

Related grades and forged products

Chromium–molybdenum and alloy steel grades we forge

• AISI 4130
• 34CrMo4
• 1.7220
• AISI 4135
• AISI 4140
• 42CrMo4
• 1.7225
• 42CrMo4V
• SCM440
• 42CD4
• 708M40
• AISI 4145
• AISI 8630
• SCM430
• SCM435
• 34CrNiMo6
• AISI 4340
• 30NiCrMo8
• 18CrNiMo7-6
• 17CrNiMo6
• AISI 8620
• All alloy steel grades →

Product forms we forge in this grade

• Forged rings
• Forged discs
• Forged valve seat rings
• Forged eccentric shafts
• Forged rolls
• All forged products

Other material families

• Carbon steel forgings
• Stainless steel forgings
• 17-4PH
• 15-5PH
• Tool steel forgings
• Nickel and cobalt alloy forgings
• Contact us