Last updated: 2026-03-24
Jiangsu Liangyi produces custom 25CrMoS4 (1.7213) forged parts for the buyers who need high-strength alloy steel bars, shafts, rings, sleeves and OEM forgings with heat treatment, machining and inspection support.
ISO 9001:2015 Certified
complete quality control system, EN 10204 3.1/3.2 MTC provided
27+ Years Forging Experience
Founded in 1997, export to 50+ countries worldwide
30kg - 30ton Capacity
Custom forgings from small components to large heavy parts
Complete-Process Production
From steel melting, forging, heat treatment to precision machining
25CrMoS4 (1.7213) Forging Quick Summary
25CrMoS4 (1.7213) is a chromium-molybdenum alloy steel used for high-strength forged components which need toughness, machinability and heat-treatment process. This page is to give both buyers and AI search systems a clear overview of the material, manufacturing scope, standards and applications.
Material
25CrMoS4 / 1.7213 chromium-molybdenum alloy steel for quenched and tempered forged components.
Typical Forms
Forged bars, shafts, seamless rolled rings, hollow forgings, sleeves, discs, blocks and custom OEM parts.
Capacity
Custom manufacturing range from 30 kg up to 30,000 kg with open die forging and rolled ring capability.
Processing Scope
Steel melting, forging, heat treatment, machining, NDT inspection and EN 10204 documentation support.
Key Standards
EN 10083-3, EN 10277-5, EN 10263-4, ISO 683-2 and ASTM A751, as stated on this page.
Main Applications
Oil and gas, power generation, marine, automotive, heavy machinery and process equipment.
Price
From USD 2 per kilogram. Final price depends on specifications, quantity and processing requirements.
Recommended RFQ details: drawing or part name, required material grade, dimensions, unit weight, order quantity, heat-treatment condition, machining scope, inspection level and certificate requirements.
Why Buyers Choose Jiangsu Liangyi for 25CrMoS4 Forgings
This page already has technical data, applications and standards, but buyers usually also want to know whether a supplier can control the whole workflow. The strengths below make the page more useful for procurement teams and more understandable for AI search summaries.
Full Manufacturing Route
From steel melting and forging to heat treatment, machining and inspection, the process is presented as one coordinated supply chain.
Heavy Section Capability
The page clearly shows a 30 kg to 30,000 kg production range, which helps qualify RFQs faster.
Documented Standards
EN, ISO and ASTM references together with EN 10204 3.1/3.2 certificate can be provided.
Industry-Specific Delivery
Application content is already segmented for oil and gas, power generation, marine, automotive and process equipment buyers.
About 25CrMoS4 (1.7213) Chromium-Molybdenum Forged Steel
Jiangsu Liangyi, established in 1997, is a professional ISO 9001:2015 certified China-based manufacturer of 25CrMoS4 (1.7213) open die forged parts and seamless rolled forged rings, with an 80,000㎡ factory and annual production capacity of 120,000 tonnes, serving industrial clients in over 50 countries across North America, Europe, the Middle East, Southeast Asia, and Oceania.
The 1.7213 (25CrMoS4) steel is a high-performance chromium-molybdenum alloy steel which has enhanced machinability, it is ideal for custom components requiring high tensile strength,great ductility, and stable performance in medium to large heat-treated sections. It is commonly used in automotive, engine, and mechanical engineering applications, with a minimum service temperature of -40°C.
We provide complete process production that from steel melting, forging, heat treatment to precision machining, 100% according to international standards and your custom drawings. Explore our full alloy steel material grades and forging production equipment for more details.
Need a custom 25CrMoS4 (1.7213) forging for your project? Contact us today for a free, no-obligation quote
25CrMoS4 (1.7213) Forged Product Forms & Specifications
We produce custom 25CrMoS4 (1.7213) forged parts in a wide range of shapes and dimensions (30 kg to 30,000 kg) to meet your project requirements. All our products are manufactured with quality control and full material traceability:
25CrMoS4 Forged Bars & Shafts
25CrMoS4 forged round bars, square bars, flat bars, rectangular bars, and precision rods including step shafts, gear shafts, crankshafts, and turbine shafts, can be provided in custom dimensions for different structural and load-bearing applications.
1.7213 Seamless Rolled Rings
1.7213 seamless rolled rings, swivel ring flanges, gear rings, slewing bearing rings, and contoured rolled rings have dimensional control for high-pressure and rotating industrial applications.
25CrMoS4 Hollow Forged Components & Casings
25CrMoS4 forged sleeves, bushes, hollow bars, pipe tubes, barrels, housings, and casings for pressure vessels, pumps, valve systems, and oil & gas wellhead equipment.
Custom 25CrMoS4 Forged Geometric Parts
Custom 25CrMoS4 forged discs, blocks, plates, valve components, impellers, flanges, gears, tube sheets, and OEM geometric parts, 100% follow your drawings and technical specifications. View our full forged product range here.
Looking for a specific 25CrMoS4 forged component? Send us your drawing for a solution
25CrMoS4 (1.7213) Forging Industry Applications & Global Case Studies
Our 25CrMoS4 (1.7213) forged steel components are trusted in global high-demand industries, with proven performance in critical applications, 100% according to API, ASTM, EN, and ISO international standards:
25CrMoS4 Forgings for Oil & Gas Industry
Our 1.7213 forged components are commonly used in onshore and offshore oil and gas extraction, processing, and transportation systems, 100% follow API 6A standards for North American and global oilfield projects. Main products include frac pump pinion shafts, bull gears, fluid end modules, wellhead Christmas tree components, casing heads, tubing spools, blowout preventer (BOP) bodies, double studded adapter flanges, and downhole drilling tool components.
North America Shale Gas Fracturing Pump Project
We produce 25CrMoS4 forged fluid end modules for high-pressure fracturing pumps to leading shale gas operators in the United States and Canada. These components can meet API 6A standards, and it has great fatigue resistance in continuous 24/7 fracturing operations, with a life cycle 30% longer than other standard carbon steel.
1.7213 Forged Parts for Power Generation (Nuclear & Thermal)
We produce 25CrMoS4 forged parts for nuclear power plants, thermal power stations, and renewable energy systems across Asia and Europe including nuclear reactor coolant pump impellers and casings, trunnions, boiler tube sheets, pressure vessel components, and turbine parts.
China Third-Generation Nuclear Power Plant Project
We produced 1.7213 forged impellers and casing shells for reactor coolant pumps in China’s third-generation nuclear power plants. These components have 100% ultrasonic testing and nuclear-grade forging requirements, they have stable mechanical properties in high-temperature, high-pressure coolant environments, and 100% follow national nuclear safety standards.
25CrMoS4 Forged Components for Marine & Offshore Engineering
Our 25CrMoS4 forged marine components can meet global classification standards for European and Asian shipbuilding clients, including marine propeller shafts, offshore pipeline fittings, swivel flanges, and subsea tree high-pressure components.
European Ocean-Going Cargo Vessel Project
We provided 1.7213 forged marine propeller shafts to a European shipbuilding enterprise for 50,000 DWT ocean-going cargo vessels. The shafts have great corrosion fatigue resistance, precise dimensional control, and stable performance in harsh seawater environments, all the shafts passed all classification inspection requirements.
25CrMoS4 Forgings for Automotive & Heavy Machinery
25CrMoS4 is ideal for heavy-duty automotive and machinery components for European commercial vehicle manufacturers, which including gearbox gears, pinion shafts, crankshafts, steering knuckles, and heavy load-bearing structural parts for construction and mining equipment.
European Heavy-Duty Commercial Vehicle Project
Our 25CrMoS4 forged crankshafts and steering knuckles are commonly used in European heavy-duty commercial vehicles. After quenching and tempering treatment, they can meet -40°C low-temperature impact resistance requirements, deliver high ductility under heavy load conditions, and 100% follow ISO 683-2 standards, with over 1 million units supplied to global OEM clients.
1.7213 Forged Parts for General Industrial & Process Equipment
We produce 1.7213 forged parts for different kinds of industrial applications across Southeast Asia and Oceania which including valve bodies, bonnets, stems and balls for ball valves, gate valves and check valves, gas compressor rotors, centrifugal pump casings and impellers, decanter centrifuge bowl bodies, and flow meter bodies.
Southeast Asia Municipal Wastewater Treatment Project
We manufactured 25CrMoS4 forged bowl bodies for decanter centrifuges that used in municipal wastewater treatment projects across Thailand and Malaysia. The components have high strength and wear resistance which can have stable performance under long-term high-speed rotation and solid-liquid separation conditions, and it can reduce maintenance frequency by 40% for our clients.
25CrMoS4 (1.7213) Material Chemical & Mechanical Specifications
| Material designation | 25CrMoS4 / 1.7213 |
|---|---|
| Material family | Chromium-molybdenum alloy steel |
| Typical forms | Bars, shafts, rolled rings, sleeves, hollow forgings and custom OEM parts |
| Weight range | 30 kg to 30,000 kg |
| Tensile strength | 900 – 1100 MPa |
| Yield strength | Min 700 MPa |
| Hardness | HB 270 – 325 |
| Minimum service temperature | -40°C |
| Referenced standards | EN 10083-3, EN 10277-5, EN 10263-4, ISO 683-2, ASTM A751 |
Chemical Composition (Compliant with ASTM A751)
| Element | Content Range |
|---|---|
| C (Carbon) | 0.22 - 0.29 |
| Si (Silicon) | Max 0.40 |
| Mn (Manganese) | 0.60 - 0.90 |
| P (Phosphorus) | Max 0.035 |
| S (Sulfur) | 0.020 - 0.040 |
| Cr (Chromium) | 0.90 - 1.20 |
| Mo (Molybdenum) | 0.15 - 0.30 |
| Fe (Iron) | Balance |
Mechanical Properties (Quenched & Tempered, Compliant with ISO 683-2:2018)
- Tensile Strength (Rm): 900 – 1100 MPa
- Yield Strength (Rp0.2): Min 700 MPa
- Elongation (A5): Min 13%
- Hardness: HB 270 – 325
- Test Condition: Room temperature, longitudinal
25CrMoS4 (1.7213) Forging Production Standards
Our 25CrMoS4 (1.7213) forged parts are manufactured according to international industry standards, including:
- EN 10277-5:2008 (Bright steel products - Technical delivery conditions for quenching and tempering steels)
- EN 10083-3:2006 (Steels for quenching and tempering - Technical delivery conditions for alloy steels)
- EN 10263-4:2001 (Steel rod, bars and wire for cold heading and extrusion - Technical delivery conditions for quenching and tempering steels)
- ISO 683-2:2018 (Heat-treated steels, alloy steels and free-cutting steels)
- ASTM A751 (Standard Test Methods for Chemical Analysis of Steel Products)
Advanced 25CrMoS4 Forging & Heat Treatment Equipment
We have complete advanced forging, heat treatment and inspection equipment to make sure the precision and quality of your 25CrMoS4 (1.7213) forged parts:
- 2000/4000/6300 ton open die forging hydraulic presses, with manipulators supporting lifting capacity up to 60 tons
- 0.75-9 ton electro-hydraulic forging hammers, 1m & 5m seamless rolling machines
- Heating forging furnaces with max capacity of 150 tons, semi-automatic heat treatment system with furnaces up to 18m in length
- Quenching tanks up to 16m, hydrogen bake-out furnaces up to 14m for specialized material treatment
- Complete non-destructive testing, chemical composition testing, mechanical property testing and metallographical testing equipment
View our full production and inspection equipment list for more details.
Quality Control & Inspection for 25CrMoS4 (1.7213) Forgings
We have full-process quality control for every batch of 25CrMoS4 (1.7213) forged parts, with 100% inspection before delivery:
- 100% ultrasonic testing for all forged bars: follow EN 10308 for bars ≤300mm diameter, and EN 10228-3 for bars >300mm diameter
- Acceptance standards: Class 3 (R < 4/5, SEP 1921 Class D/c) in the area between OD and D/2; Class 2 (SEP 1921 Class Cc, R≥ 3/4) in other sections
- Inspection checked by certified technicians with minimum COFREND Level 2 certification
- For every order, we provide an EN 10204 3.1 certificate which including all casting number, inspection results, and follow all specification requirements
Frequently Asked Questions About 25CrMoS4 (1.7213) Forgings
25CrMoS4 (1.7213) is a chromium-molybdenum alloy steel primarily used for high-strength components in oil & gas, power generation, marine, automotive, and heavy machinery industries. Common applications include gear shafts, pump components, valve bodies, seamless rolled rings, and pressure vessel parts requiring high ductility and machinability.
In quenched and tempered condition, 25CrMoS4 (1.7213) has a tensile strength of 900–1100 MPa, minimum yield strength of 700 MPa, minimum elongation of 13%, and hardness range of HB 270–325, tested at room temperature in longitudinal direction per ISO 683-2:2018.
Our 25CrMoS4 (1.7213) forged parts are produced according to EN 10083-3, EN 10277-5, EN 10263-4, ISO 683-2, and ASTM A751 international standards. We also provide EN 10204 3.1/3.2 mill test certificates for every order.
We produce custom 25CrMoS4 (1.7213) forgings with weights ranging from 30 kg to 30,000 kg (30 tons), with an annual production capacity of 120,000 tons. We provide complete process production from steel melting, forging, heat treatment to precision machining.
We have 100% ultrasonic testing for all 25CrMoS4 forged parts per EN 10308 (≤300mm diameter) and EN 10228-3 (>300mm diameter). All inspections are made by COFREND Level 2 certified technicians.
Get a Custom Quote for 25CrMoS4 (1.7213) Forged Parts
As a professional China-based 25CrMoS4 (1.7213) forging manufacturer, we provide OEM custom production, competitive factory-direct pricing, and on-time delivery for global clients. To get an accurate and fast quote, please send us your custom drawings, material grade, required quantity, and technical specifications.
Inquiry Email: sales@jnmtforgedparts.com
Phone/WhatsApp: +86-13585067993
Tel/Fax: +86-510-86107550
Official Website: https://www.jnmtforgedparts.com
Factory Address: Chengchang Industry Park, Jiangyin City, Jiangsu Province, China