# 1.4532 Forgings (X8CrNiMoAl15-7-2 / PH15-7Mo / 15-7PH / UNS S15700 / AISI 632) Data sheet published by Jiangyin Jiangnan Metal Co., Ltd., open-die forging factory, Jiangyin, Jiangsu, China. Last reviewed 23 September 2026. Web version: https://www.steelforgepieces.com/Stainless-Steel/1.4532.html EN 1.4532 (X8CrNiMoAl15-7-2) is a semi-austenitic precipitation-hardening stainless steel with 14 to 16 % chromium, 6.5 to 7.75 % nickel, 2 to 3 % molybdenum and 0.75 to 1.5 % aluminium. It is better known in the trade as PH15-7Mo, 15-7PH or UNS S15700. The steel is machined soft in the solution-annealed condition, then transformed to martensite and aged to condition TH1050 or RH950, where tensile strength reaches roughly 1450 to 1690 MPa. Its molybdenum content gives it better chloride resistance than 17-7PH. Jiangyin Jiangnan Metal Co., Ltd. forges 1.4532 to customer drawing at its works in Jiangyin, Jiangsu. Piece weights run from 20 kg to 30 tonnes and cover seamless rolled rings, forged rings, flanges, round bars, disks, shafts, sleeves, bushings, tube sheets and hollow forgings. Material is melted by EAF plus VOD, with ESR remelting where the application calls for it, and released against EN 10204 3.1 or 3.2 certification. **Manufacturer:** Jiangyin Jiangnan Metal Co., Ltd. **Address:** No.1 Chengxiqiao Road, Zhouzhuang Town, Jiangyin City, Jiangsu Province, China **Telephone / WhatsApp / WeChat:** 0086-189-2135-9659 **Email:** sales@steelforgepieces.com --- ## 1.4532 at a glance | Item | Value | |---|---| | EN material number | 1.4532 | | EN designation | X8CrNiMoAl15-7-2 | | UNS / AISI | S15700 / 632 | | Common trade names | PH15-7Mo, 15-7PH | | Steel type | Semi-austenitic precipitation-hardening stainless | | Key alloying | 15 Cr, 7 Ni, 2.5 Mo, 1.1 Al | | Tensile strength, TH1050 | about 1450 MPa (210 ksi) | | Tensile strength, RH950 | about 1690 MPa (245 ksi) | | Hardness range | 88 HRB annealed, up to 48 HRC | | Density | 7.80 g/cm3 annealed, 7.67 g/cm3 hardened | | PREN (Cr + 3.3 Mo) | about 23 | | Service temperature | cryogenic to about 315 degrees C (600 degrees F) | --- ## What is 1.4532 stainless steel? 1.4532 belongs to the semi-austenitic group of precipitation-hardening stainless steels. After solution annealing the structure is austenitic and soft, so the steel forges, bends, drills and rough machines without much trouble. A conditioning treatment then destabilises that austenite and converts it to martensite. A final ageing treatment at low temperature precipitates fine nickel-aluminide (Ni3Al) particles through the structure, and tensile strength rises past 1400 MPa. The composition is close to 17-7PH (1.4568) apart from the molybdenum. Adding 2 to 3 % Mo lifts the pitting resistance equivalent number from about 17 to about 23, improves behaviour in chlorides and in reducing acids, and helps the steel hold strength at temperature. Forgings in this grade turn up in valve internals, pump shafts, springs, retaining rings, subsea hardware and aerospace fittings. Two points matter when buying forgings in 1.4532. The steel leaves the mill in Condition A and is hardened after machining rather than before, which is what keeps tight-tolerance work affordable. And since hardening depends on a controlled transformation from austenite to martensite, the furnace records carry as much weight as the chemical analysis. A part with no traceable heat-treatment chart cannot be relied on. --- ## 1.4532 equivalent grades and standards The same alloy sells under at least eight designations. If a drawing calls out any of these, 1.4532 is the grade to quote. | Region or system | Designation | Covering specification | |---|---|---| | Europe (EN) | 1.4532, X8CrNiMoAl15-7-2 | EN 10088-3 for bar, EN 10250-4 for open-die forgings | | Germany (DIN, legacy) | X7CrNiMoAl15-7 | DIN 17224 | | USA, UNS | S15700 | ASTM A693 Grade 632, close to ASTM A564 Grade XM-25 | | USA, AISI and trade | AISI 632, 15-7PH, PH15-7Mo | AMS 5520 for sheet, strip and plate | | USA, military | Not applicable | MIL-S-25043 | | Japan (JIS) | SUS 632, SUS632J1 | JIS G 4303 and G 4304 series | | China (GB) | 0Cr15Ni7Mo2Al, 022Cr15Ni7Mo2Al | GB/T 1220, GB/T 4237 | | Related EN number | 1.4574 | Very close chemistry, often cross-referenced with 1.4532 | Cross-references are for guidance only. Where a contract names a specific standard we manufacture and certify to that standard, not to the nearest equivalent. --- ## Chemical composition of 1.4532 Values in weight percent, to EN 10088-3 and ASTM A693 Grade 632. Iron makes up the balance. | Element | Min | Max | Function | |---|---|---|---| | Carbon (C) | - | 0.09 | Held low to protect corrosion resistance and toughness | | Silicon (Si) | - | 1.00 | Deoxidiser. EN limits it to 0.70 | | Manganese (Mn) | - | 1.00 | Deoxidiser and austenite stabiliser | | Phosphorus (P) | - | 0.040 | Residual, limited for toughness | | Sulphur (S) | - | 0.030 | Residual. VOD practice usually reaches below 0.010 | | Chromium (Cr) | 14.00 | 16.00 | Forms the passive film that carries the corrosion resistance | | Nickel (Ni) | 6.50 | 7.75 | Sets austenite stability and the Ms temperature | | Molybdenum (Mo) | 2.00 | 3.00 | Adds pitting and crevice resistance and hot strength. This is what separates the grade from 17-7PH | | Aluminium (Al) | 0.75 | 1.50 | Forms the Ni3Al precipitates behind the hardening response | | Iron (Fe) | Balance | | About 73 % | Every heat is analysed by optical emission spectrometry and the ladle analysis appears on the EN 10204 certificate. Product analysis on the finished forging is available on request. --- ## Heat treatment of 1.4532 forgings 1.4532 is not hardened in one step. Three stages are needed: solution anneal, austenite conditioning, then ageing. That middle stage is what separates the semi-austenitic PH grades from martensitic PH grades such as 17-4PH. For forgings the two working conditions are TH1050 and RH950. | Condition | Stage 1, solution anneal | Stage 2, conditioning | Stage 3, ageing | Result | |---|---|---|---|---| | A (as supplied) | 1050 to 1065 C, soak to section, air cool | Not applicable | Not applicable | Soft, unstable austenite. Machine and form the part in this condition. | | TH1050 | From Condition A | 760 C +/-15 C for 90 min, cool to about 15 C within 1 h, hold 30 min | 565 C +/-10 C for 90 min, air cool | About 1450 MPa Rm at 43 HRC. The usual choice for forgings. | | RH950 | From Condition A | 955 C +/-15 C for 10 min, air cool, then -73 C for 8 h, warm to room temperature | 510 C +/-10 C for 90 min, air cool | About 1690 MPa Rm at 48 HRC. The highest strength available in forged sections. | | CH900 | Needs Condition C, produced by 60 % or more cold reduction, then ageing at 482 C for 60 min | | | Strip and sheet only. Cannot be applied to open-die forgings. | **A note on drawings.** H900, H1025, H1075 and H1150 are conditions of the martensitic PH grades 17-4PH (1.4542) and 15-5PH (1.4545). They do not exist for 1.4532. Where a drawing calls for "1.4532 H900" the intent is nearly always RH950. Send us the drawing and we will confirm the condition before cutting steel. **Distortion.** Movement during precipitation hardening of 1.4532 is small, normally under 0.05 % on length. The practical route is therefore to rough machine in Condition A, harden, then finish grind. Hardening a finished part rarely scraps it, but a finishing allowance of 0.3 to 1.0 mm on critical surfaces is still sensible. --- ## Mechanical properties of 1.4532 Room-temperature values for forged bar and ring sections. | Condition | Tensile strength Rm | 0.2 % proof Rp0.2 | Elongation A | Reduction of area | Hardness | |---|---|---|---|---|---| | A (annealed) | 860 MPa (125 ksi) | 380 MPa (55 ksi) | 30 % | 45 % | 88 HRB | | TH1050 | 1450 MPa (210 ksi) | 1380 MPa (200 ksi) | 6 % | 25 % | 43 HRC | | RH950 | 1690 MPa (245 ksi) | 1515 MPa (220 ksi) | 6 % | 10 % | 48 HRC | These are typical values, not guaranteed minima. The figures come from the properties published for 15-7Mo to AMS 5520, which is written for sheet, strip and plate. Heavy forged sections normally test below thin-product typicals, and how far below depends on section thickness, forging ratio and where the coupon is taken from. Acceptance values for an order are agreed in writing at enquiry stage and verified on coupons cut from prolongations of the actual forging. --- ## Physical properties of 1.4532 | Property | Metric | Imperial | |---|---|---| | Density, Condition A | 7.80 g/cm3 | 0.282 lb/in3 | | Density, TH1050 or RH950 | 7.67 g/cm3 | 0.277 lb/in3 | | Young's modulus at 21 C | 195 GPa | 28 x 10^6 psi | | Young's modulus at 300 C | about 170 GPa | about 24.7 x 10^6 psi | | Thermal conductivity at 21 C | 15.1 W/m.K | 8.7 BTU.ft/h.ft2.F | | Thermal conductivity at 204 C | 17.8 W/m.K | 10.3 BTU.ft/h.ft2.F | | Mean CTE, 21 to 540 C | 9.0 to 15.3 x 10^-6 /K | 5.0 to 8.5 x 10^-6 /F | | Specific heat at 20 C | 0.46 kJ/kg.K | 0.11 BTU/lb.F | | Electrical resistivity | 0.82 micro-ohm.m | 82 microhm.cm | | Melting range, approximate | 1400 to 1440 C | 2550 to 2620 F | | Magnetic response | Weakly magnetic in Condition A, ferromagnetic after TH1050 or RH950 | | --- ## Corrosion resistance of 1.4532 In corrosion terms 1.4532 sits between 17-7PH and the 316-type austenitics, and ahead of 17-4PH in chloride service. Its PREN of about 23 (Cr + 3.3 x Mo, so 15 + 8.3) reflects the molybdenum, which gives it better pitting and crevice resistance than 17-7PH at PREN 17 or 17-4PH at PREN 16. - Atmospheric and mild chemical service: comparable to 304 / 1.4301, both in Condition A and in TH1050. - Chloride pitting: better than 17-7PH and 17-4PH, though not a substitute for duplex or 6 Mo alloys in warm seawater. - Reducing acids: the molybdenum improves resistance to dilute sulphuric and phosphoric acid compared with Mo-free PH grades. - Stress-corrosion cracking: the over-aged TH1050 condition resists SCC better than peak-strength RH950. Where H2S or chlorides are present, specify TH1050 and agree a maximum hardness. - Sour service: hardened PH stainless steels are hardness-limited under NACE MR0175 / ISO 15156. Tell us the service environment at enquiry stage so the condition and acceptance hardness are set correctly. --- ## 1.4532 forged products and size capability Product forms: seamless rolled rings, forged rings, flanges, round bars and billets, disks and discs, shafts and spindles, sleeves, bushings, hollow forgings, forged pipes and tubes, valve bodies, bonnets, stems, seat rings and plugs, nozzles, crankshafts, gear blanks, manifolds, forged rolls and wheels. | Product form | Size range | Single-piece weight | Tolerance | |---|---|---|---| | Seamless rolled rings | OD 150 to 3000 mm, wall 25 to 600 mm, height 30 to 1000 mm | 20 kg to 12 t | As-forged +/-3 to 8 mm, or machined to drawing | | Forged rings, upset and punched | OD 120 to 2000 mm | 20 kg to 8 t | As-forged +/-3 to 6 mm | | Round bar and billet | Dia. 80 to 800 mm, length up to 8000 mm | 30 kg to 15 t | Peeled or rough-turned on request | | Disks and discs | Dia. 200 to 2500 mm, thickness 40 to 800 mm | 30 kg to 20 t | As-forged +/-4 to 8 mm | | Shafts and spindles | Dia. 100 to 900 mm, length up to 8000 mm | 50 kg to 25 t | Rough-turned, centres provided | | Sleeves and hollow forgings | OD 150 to 1800 mm, ID from 80 mm | 20 kg to 15 t | Bored and rough-turned | | Flanges | OD 100 to 2500 mm | 10 kg to 10 t | ASME B16.5, B16.47, EN 1092-1 or drawing | | Maximum single piece | Up to 30 tonnes depending on geometry | | Send the drawing for confirmation | Minimum order quantity is one piece. We take prototypes and single spares alongside series production. --- ## How 1.4532 forgings are manufactured 1. **Melting.** EAF plus VOD (vacuum oxygen decarburisation) as standard, which gives low carbon, low sulphur and controlled aluminium. ESR remelting is added where the application needs better cleanliness, less segregation and improved transverse properties. 2. **Ingot inspection.** Hot-top crop, surface conditioning and homogenisation before forging. 3. **Open-die forging.** Heated to 1150 to 1200 C and forged with a finish temperature above 950 C. A forging ratio of at least 3:1, higher on request. 4. **Ring rolling.** Radial-axial rolling for seamless rolled rings, which gives continuous circumferential grain flow. 5. **Solution anneal.** 1050 to 1065 C and air cool to Condition A, with charted furnace records. 6. **Rough machining.** Turning, boring and facing in Condition A, leaving a hardening allowance. 7. **Precipitation hardening.** TH1050 or RH950, with calibrated thermocouples and full time and temperature charts. 8. **NDT and final inspection.** Ultrasonic, penetrant or magnetic particle, dimensional and hardness checks. 9. **Marking and packing.** Hard stamp or vibro-etch with heat number and item number, then seaworthy wooden cases or steel pallets. --- ## Testing, inspection and certification | Item | Method or standard | |---|---| | Chemical analysis | Optical emission spectrometry. Ladle analysis as standard, product analysis on request | | Tensile and proof strength | EN ISO 6892-1 or ASTM A370, from prolongation coupons | | Impact toughness | EN ISO 148-1 or ASTM E23, Charpy V-notch, ambient or sub-zero | | Hardness | EN ISO 6508 for HRC and HRB, EN ISO 6506 for HBW | | Ultrasonic testing | EN 10228-3, SEP 1921 or ASTM A388, class agreed at order | | Surface NDT | Liquid penetrant to EN ISO 3452 or ASTM E165, magnetic particle where applicable after hardening | | Grain size and microstructure | ASTM E112, with intergranular corrosion testing on request | | Dimensional | 100 % inspection against drawing, CMM report on request | | Certification | EN 10204 3.1 as standard, EN 10204 3.2 countersigned by TUV, SGS, BV, DNV or Lloyd's Register on request | | Traceability | Heat number and item number hard stamped or vibro-etched on every piece | --- ## Applications for 1.4532 forgings **Oil, gas and subsea:** wellhead and Christmas tree components, subsea and deepwater production hardware, valve stems, seat rings, plugs and bodies, forged flanges and hubs. **Chemical and process plant:** shafts for chemical and plunger pumps, pressure vessel and air receiver components, shell-and-tube heat exchanger tube sheets, columns, towers, tanks, silos and preheaters. **Power and rotating equipment:** turbine and compressor spindles, gear blanks and gearbox shafts, industrial air compressors and nitrogen generators, retaining rings and coupling hubs. **Aerospace and springs:** structural fittings and fastener stock, high-load springs and diaphragms, actuator and landing-gear components. **Marine and heavy machinery:** shipbuilding shafting and forged wheels, forged rolls and manifolds, cement, sugar and concrete mill components. **Pharmaceutical and food:** crystalliser and processing-unit parts, hygienic pump and valve components, biochemistry process hardware. --- ## Machining, welding and forming ### Machining Rough machine in Condition A. The austenitic structure work-hardens quickly, so the rules are those for 304-type stainless: sharp positive-rake carbide inserts, a heavy and constant depth of cut that gets underneath the previously work-hardened layer, rigid setups and flood coolant. Do not let the tool dwell or rub. Around 60 to 90 m/min is a reasonable starting surface speed for turning in Condition A. In TH1050 at 43 HRC, and more so in RH950 at 48 HRC, the material is hard. Plan on grinding, hard turning with CBN, or EDM for finishing after hardening, and leave only a small allowance. ### Welding GTAW, GMAW and plasma welding all work. Weld in Condition A without preheat and at low heat input, using matching filler or an AWS ER630 type depending on the joint. The weldment then has to be re-solution annealed and re-aged so that the weld metal and heat-affected zone finish in the same condition as the parent material. Welding a part that is already in TH1050 or RH950 over-ages the heat-affected zone and the strength there does not come back. ### Forming Cold forming works in Condition A, though the alloy work-hardens fast and intermediate annealing is sometimes needed. Hot working runs between 1150 C and 950 C and is followed by a full solution anneal. --- ## 1.4532 compared with other PH stainless grades | Grade | EN no. | UNS | Type | Mo % | PREN | Peak Rm | Best suited to | |---|---|---|---|---|---|---|---| | 1.4532 (PH15-7Mo) | 1.4532 | S15700 | Semi-austenitic | 2.0 to 3.0 | 23 | 1690 MPa | High strength with chloride resistance | | 17-7PH | 1.4568 | S17700 | Semi-austenitic | None | 17 | 1650 MPa | Springs and strip where Mo is not needed | | 17-4PH | 1.4542 | S17400 | Martensitic | None | 16 | 1310 MPa | Heavy forgings, single-step H conditions | | PH13-8Mo | 1.4534 | S13800 | Martensitic | 2.0 to 2.5 | 21 | 1520 MPa | Toughness and transverse properties | **Which grade to specify.** For a heavy forging in mild corrosion duty, 17-4PH is usually cheaper and simpler to process. For very high strength in a chloride environment, 1.4532 is the better answer. Where high strength has to come with premium toughness and good short-transverse properties, PH13-8Mo is the grade. We forge all four and can advise at enquiry stage. --- ## Frequently asked questions ### What is EN 1.4532 stainless steel? EN 1.4532, full name X8CrNiMoAl15-7-2, is a semi-austenitic precipitation-hardening stainless steel containing 14 to 16 % chromium, 6.5 to 7.75 % nickel, 2 to 3 % molybdenum and 0.75 to 1.5 % aluminium. It is soft and formable in the solution-annealed Condition A, then transformed to martensite and age-hardened to reach roughly 1450 MPa in condition TH1050 and about 1690 MPa in condition RH950. It is the molybdenum-bearing version of 17-7PH and is widely known as PH15-7Mo, 15-7PH, UNS S15700 or AISI 632. ### What is 1.4532 equivalent to? 1.4532 is equivalent to UNS S15700, AISI 632, 15-7PH, PH15-7Mo, SUS 632 in Japan and 0Cr15Ni7Mo2Al in China. It is covered by EN 10088-3 and EN 10250-4 in Europe, by ASTM A693 Grade 632 and AMS 5520 for flat product, and is close to ASTM A564 Grade XM-25 for bar and forgings. ### What is the difference between 1.4532 (PH15-7Mo) and 17-7PH (1.4568)? The difference is molybdenum. 1.4532 contains 2 to 3 % Mo and 17-7PH contains none. That molybdenum raises the pitting resistance equivalent number from about 17 to about 23, improves resistance to chlorides and reducing acids, and raises strength at elevated temperature. Chromium, nickel and aluminium levels and the heat-treatment routes are otherwise very similar. ### What tensile strength can 1.4532 forgings reach? In Condition A a 1.4532 forging is soft, with tensile strength around 860 MPa, 0.2 % proof strength around 380 MPa, elongation about 30 % and hardness about 88 HRB. Condition TH1050 gives a typical tensile strength of about 1450 MPa with 0.2 % proof strength around 1380 MPa and hardness about 43 HRC. Condition RH950 gives a typical tensile strength of about 1690 MPa with 0.2 % proof strength around 1515 MPa and hardness about 48 HRC. These are typical values published for thin product to AMS 5520. Heavy forged sections normally test lower, so contractual minima are agreed at enquiry stage and verified per heat on the material certificate. ### Can 1.4532 forgings be supplied in condition CH900 or H900? No. CH900 needs Condition C, which is produced by heavy cold reduction of strip and sheet, so it cannot be applied to heavy open-die forgings. H900, H1025 and H1150 are conditions of the martensitic grades 17-4PH and 15-5PH rather than of 1.4532. For forgings in 1.4532 the correct conditions are A, TH1050 and RH950. ### In which condition should 1.4532 be machined? Rough machine in the solution-annealed Condition A, where the material is austenitic and work-hardening but still cuts well with sharp carbide tooling, positive rake and heavy rigid cuts. Leave a finishing allowance of roughly 0.3 to 1.0 mm on critical surfaces, then harden to TH1050 or RH950 and finish grind. Distortion during precipitation hardening is small, normally well under 0.1 %. ### Is 1.4532 weldable? Yes. 1.4532 is welded by GTAW, GMAW and plasma processes, preferably in Condition A and without preheat. Matching filler or an AWS ER630 type is used depending on the application, and the assembly must be re-solution annealed and then aged so that the weld and heat-affected zone reach the same condition as the parent metal. Welding a part that is already in TH1050 or RH950 over-ages the heat-affected zone and loses strength there. ### Is 1.4532 magnetic? In Condition A the structure is mainly unstable austenite and the material is only weakly magnetic. Once it is transformed and aged to TH1050 or RH950 the structure becomes martensitic and the material is clearly ferromagnetic. Magnetic response is therefore a quick shop-floor check of whether a 1.4532 part has been hardened. ### What is the maximum service temperature of 1.4532? 1.4532 is normally used continuously up to about 315 degrees C (600 degrees F), which is the upper end of the published elevated-temperature tensile data. Strength falls progressively above that, and service near or above the ageing temperature, 510 degrees C for RH950 and 565 degrees C for TH1050, over-ages the precipitates and permanently reduces strength. For cryogenic and sub-zero duty the alloy keeps good toughness. ### What sizes of 1.4532 forgings can Jiangyin Jiangnan Metal supply? Jiangyin Jiangnan Metal Co., Ltd. produces 1.4532 open-die forgings and seamless rolled rings from about 20 kg to 30 tonnes in a single piece. Rings run from roughly 150 mm to 3000 mm outside diameter, round bars from 80 mm to 800 mm diameter, disks up to about 2500 mm diameter and shafts up to about 8000 mm long. Parts are made to customer drawing with EN 10204 3.1 or 3.2 certification, and minimum order quantity is one piece. ### What documentation is supplied with 1.4532 forgings? Each shipment carries an EN 10204 3.1 inspection certificate as standard, or an EN 10204 3.2 certificate countersigned by a third party such as TUV, SGS, BV, DNV or Lloyd's Register on request. The certificate reports heat number, melting route, chemical analysis, heat-treatment condition and records, mechanical test results, hardness, ultrasonic testing to EN 10228-3, SEP 1921 or ASTM A388, and dimensional inspection. ### How long does a 1.4532 forging take to produce? Lead time for a 1.4532 open-die forging is normally 25 to 45 days from order confirmation, depending on ingot availability, size, the heat-treatment condition and how much machining is involved. Repeat items and parts made from stock ingot run faster. Send the drawing to sales@steelforgepieces.com for a confirmed schedule. --- ## Request a quotation Jiangyin Jiangnan Metal Co., Ltd. is an open-die forging factory in Jiangyin, Jiangsu, China. We forge 1.4532 (PH15-7Mo / UNS S15700) rings, flanges, bars, disks, shafts, sleeves and tube sheets to drawing, from single prototypes through to series production, with EN 10204 3.1 or 3.2 certification and worldwide shipping. - **Factory address:** No.1 Chengxiqiao Road, Zhouzhuang Town, Jiangyin City, Jiangsu Province, China - **Telephone / WhatsApp / WeChat:** 0086-189-2135-9659 - **Email:** sales@steelforgepieces.com - **Response time:** quotation within 24 hours on working days To quote quickly we need the drawing or dimensions, the quantity, the required condition (A, TH1050 or RH950), the certification level (EN 10204 3.1 or 3.2), any NDT requirement, the machining state (as-forged, rough-turned or finish-machined) and the destination port. --- ## Standards and data sources Property data on this page is compiled from the standards and mill data below and cross-checked against our own production and test records. Where a figure is typical rather than a specification minimum it is labelled as such in the table it appears in. - EN 10088-3, stainless steels, technical delivery conditions for bars, rods, wire, sections and bright products. - EN 10250-4, open-die steel forgings for general engineering purposes, Part 4, stainless steels. - ASTM A693, precipitation-hardening stainless plate, sheet and strip, Grade 632 (UNS S15700). - ASTM A564/A564M, age-hardening stainless bars and shapes. Grade XM-25 is the nearest bar equivalent. - SAE AMS 5520, 15Cr-7.1Ni-2.3Mo-1.2Al sheet, strip and plate, including the TH1050 and RH950 heat-treatment cycles. - ATI 15-7 technical data sheet, mill-published typical mechanical and physical properties. - EN 10204, types of inspection document, covering 3.1 and 3.2 certification. - EN 10228-3, SEP 1921 and ASTM A388, ultrasonic testing of forgings. --- ## About the manufacturer Jiangyin Jiangnan Metal Co., Ltd. is an open-die forging factory at No.1 Chengxiqiao Road, Zhouzhuang Town, Jiangyin City, Jiangsu Province, China, in the Yangtze River Delta forging cluster and around two hours from the ports of Shanghai and Ningbo. The works produces open-die forgings and seamless rolled rings from 20 kg to 30 tonnes in carbon steel, alloy steel, tool steel, stainless steel and nickel alloys. Precipitation-hardening stainless grades include 1.4532 (PH15-7Mo), 17-4PH, 17-7PH and PH13-8Mo. Every 1.4532 forging is made to customer drawing, melted by EAF plus VOD with optional ESR remelt, heat treated in-house with charted furnace records, ultrasonically tested, and released against an EN 10204 3.1 or 3.2 certificate. Minimum order quantity is one piece and we ship worldwide. **Disclaimer.** The technical data on this page is compiled from the standards listed above together with our own production experience and is published for general engineering guidance. Properties vary with section size, heat and heat-treatment lot. Acceptance values for a specific order are agreed in writing at enquiry stage and verified on the actual forging.