A668 10250 17100 Open die steel forging parts
10250 open die steel forgings feature uniform forged microstructure, sound internal quality and excellent toughness, ideal for heavy-duty load-bearing parts in metallurgical, marine and wind power applications.
- Standard: ASTM A668, EN 10250, GB/T 17107, DIN 17100
- Technique: Open Die Forging
- Shape: Stepped Shaft / Cylinder Forging
- Heat treatment: Normalizing + Quenching + Tempering/ Induction Hardening
- Surface Treatment: Anti-rust Oil+ Plastic Wrap Bright Turned or Ground
- Tolerance: Rough Turning: ±1.0 mm to ±3.0 mm; Finish Turning/Grinding: ±0.01 mm to ±0.05 mm
- MOQ: 1 PC
Main characteristics of 10250 open die forging parts
- Uniform forged structure - consistent mechanical performance
- Sound internal quality - reliable heavy load capacity
- Superior machinability - efficient precision machining
- Good impact toughness - adapts to dynamic working conditions
10250 open die forging part applications
10250 steel For Metallurgical Equipment
10250 steel boasts excellent high-temperature strength and thermal fatigue resistance, sustaining stable performance under heavy thermal cycling loads.
10250 steel For Marine Industry
10250 steel delivers robust structural strength and corrosion tolerance, ideal for critical load-bearing components in harsh offshore operating environments.
10250 steel for Wind Power
10250 steel for wind power offers excellent low-temperature toughness and fatigue resistance, guaranteeing long-term reliability of core forgings in harsh wind field working conditions.
Our production technology for 10250 open die forging parts
- EAF
- LF
- VD
- Heating & Forging
- Post-Forge Annealing
- Rough Machining
- NDT
- Q&T Heat Treatment
- Fine Machining
- UT 100% SEP1921 Class 3 D/d or E/e
- Spheroidized microstructure as per standard NADCA207-2003 AS1-AS9
- Macrostructure, microstructure, grain size, and impact toughness shall meet the standards specified in GB/T 1299-2025 for Tool and Die Steels.
mechanical properties & heat treatment of 10250 steel
| Heat temperature | Start forging temperature | Finish forging temperature | Cooling method |
| 1200°C – 1250°C | 1150°C – 1200°C | ≥ 800°C (or 800°C – 850°C) | Slow cooling (Furnace cooling / Pit cooling) |
Annealing
- Heating & Soaking: Heat slowly to 840°C - 880°C and hold for 1 hour per 25mm of maximum section thickness to ensure complete austenitization.
- Grain Refinement: Soaking at temperature to refine the coarse as-forged grain structure and homogenize the microstructure.
- Cooling: Furnace cool (slow cooling) at a rate of ≤20°C/hour down to 300°C before air cooling, allowing hydrogen to diffuse out to prevent white spots/cracks.
Hardening
- Heating: Heat slowly to 840°C - 880°C (for alloy steel) or 820°C - 850°C (for carbon steel) and soak thoroughly.
- Soaking: Maintain at the hardening temperature for 1.5 to 3 hours to ensure uniform temperature from surface to core.
- Quenching: Quench in agitated oil or polymer medium (water is not recommended for large alloy shafts due to cracking risk) to achieve a martensitic structure.
Stress relieving
- Heating: Heat uniformly to 550°C - 650°C (below the Ac1 transformation temperature).
- Holding: Hold for 2 to 4 hours depending on the cross-section to ensure the core reaches the temperature.
- Cooling: Slow furnace cooling to 350°C, followed by still air cooling to minimize dimensional distortion.
Tempering
- Reheating: Reheat immediately after quenching to 550°C - 650°C to obtain a tempered sorbite structure.
- Soaking: Hold for 3 to 6 hours to ensure uniform hardness and relieve quenching stresses throughout the heavy section.
- Cooling: Air cooling (or rapid cooling in oil/water if the material is susceptible to temper brittleness) to ambient temperature.
Why Choose NSPM as Your 10250 open die forging parts Supplier
Source Direct
Direct mill cooperation ensures stable supply, competitive pricing, and consistent quality. Global resource integration and strong supply chain management guarantee reliable material sourcing and long-term availability.
Stock Ready
50,000+ tons inventory across 11 warehouses enables fast delivery. Flexible cutting, short lead times, and ready stock support urgent demands and improve customers’ production efficiency.
Expert Team
600+ professionals, including R&D specialists and technical engineers, provide application-driven support. Fast response and deep tooling knowledge ensure accurate solutions for diverse industrial needs.
Fully Inspected
Strict quality control system with full traceability, UT testing, and heat treatment records. Certified standards (ISO, CE) ensure every material meets high-performance and reliability requirements.
Full-Chain Machining
From steel supply to precision machining, heat treatment, and equipment manufacturing, NSPM offers integrated solutions that enhance accuracy, efficiency, and overall tooling performance.
