L6 1.2714 SKT4 hot work tool steel
1.2714 tool steel offers excellent impact toughness, wear resistance, and high-temperature strength. With good hardenability and dimensional stability, ideal for hot forging, die casting, and extrusion tooling.
- Standard: AISI L6, DIN 1.2714, JIS SKT4, GB 5CrNiMoV
- Technique: EAF + LF + VD or ESR, forged, multi-directional forging ratio ≥4, stress-relief annealed
- Shape: Flat, Round, Blocks
- Heat treatment:: Supplied in annealed condition, hardness ≤248 HBW; pre-hardened to 38–44 HRC (quenched and tempered) available on request
- Surface Treatment: Black, turned, milled / ground, sawn ends
- Tolerance: flat bar thickness: +0.5/-0.0 mm (turned), width as agreed; forged blocks: ±0.2 mm
- MOQ: 1 Ton
We supply DIN 1.2714 in various custom sizes
flat size range
- Thickness: 6-200 mm
- Width: 40-2000 mm
block size range
- Thickness: 200-600 mm
- Width: 300-2000 mm
round size range
- Diameter: φ10-1200 mm
Chemical Composition (%)
| Steel Grade | C | Si | Mn | P | S | Cr | Mo | V | Ni |
| 1.2714 | 0.50-0.60 | 0.10-0.40 | 0.60-0.90 | ≤ 0.030 | ≤ 0.030 | 0.80-1.20 | 0.35-0.55 | 0.05-0.12 | 1.50-1.80 |
| 1.2713 | 0.50-0.60 | 0.10-0.40 | 0.65-0.95 | ≤ 0.030 | ≤ 0.030 | 0.60-0.80 | 0.25-0.35 | 0.07-0.12 | 1.50-1.80 |
| L6(AISI) | 0.65-0.75 | 0.10-0.50 | 0.25-0.80 | ≤ 0.030 | ≤ 0.030 | 0.60-1.20 | ≤ 0.50 | — | 1.25-2.00 |
| 5CrNiMoV | 0.50-0.60 | ≤ 0.40 | 0.50-0.80 | ≤ 0.030 | ≤ 0.030 | 1.00-1.20 | 0.45-0.55 | 0.07-0.12 | 1.40-1.80 |
| SKT4(JIS) | 0.50-0.60 | ≤ 0.35 | 0.60-1.00 | ≤ 0.030 | ≤ 0.030 | 0.70-1.00 | 0.20-0.50 | — | 1.50-1.80 |
Main characteristics of 1.2714 tool steel
- Built for Impact — Not Easy to Crack
- Pre-hardened — Skip Heat Treatment
- Heavy Load Ready — Stable Under Pressure
- Longer Die Life — Reduce Downtime & Cost
L6 | 1.2714 | SKT4 tool steel applications
1.2714 steel for Die Casting Die
High toughness and excellent thermal conductivity make 1.2714 a reliable choice for die casting dies subject to moderate thermal loads, reducing early cracking risks.
1.2714 steel for Extrusion Tooling
Good hot hardness combined with superior wear resistance ensures stable performance and extended service life in hot extrusion tooling for light alloys.
1.2714 steel for Hot Forging Die
Outstanding shock resistance and deep hardenability enable 1.2714 to withstand severe impact and thermal cycling in large-scale hot forging applications.
Our Production Technology For 1.2714 (55NiCrMoV7) Hot Work Tool Steel
- EAF
- LF
- VD
- ESR
- Forged
- Spheroidizing Annealed
- Machined surface
- Ultrasonic testing (UT) 100% per ASTM A388 (max. FBH 6mm) or SEP 1921 Class C/c, D/d, or E/e
- Micro Cleanliness per ASTM E45 Method A: Sulfides ≤ 0.5, Oxides, Silicates & Globular Oxides ≤ 1.0 or DIN 50602-K1 ≤ 10
- Spheroidized microstructure as per NADCA#207-2003
- Grain size and mechanical properties shall meet the standards specified in GB/T 1299-2025 for Tool and Die Steels (or similar)
mechanical properties & heat treatment of 1.2714 steel
| Heat temperature | Start forging temperature | Finish forging temperature | Cooling method |
| 1120 – 1150 °C | 1050 – 1100 °C | ≥ 850 °C | Pit or sand cooling (Slow cooling required) |
Annealing
- Heat to 740 - 760°C (1364 - 1400°F) and soak thoroughly
- Slow cooling in furnace at max 10 - 20°C/h (50 - 68°F/h) to approx. 600°C (1112°F)
- Then air cool. Hardness after annealing: max. 248 - 255 HB
Hardening
- Preheating (Two-Stage): First stage at 600 - 650°C (1112 - 1202°F), second stage at 830 - 850°C (1526 - 1562°F)
- Austenitizing: 830 - 880°C (1526 - 1616°F)
- Quenching Media: Oil (achieving ~58 HRC) or Air (achieving ~56 HRC)
- Post-Quenching: Temper as soon as the tool reaches hand-warm temperature
Stress relieving
- Perform after rough machining
- Heat carefully to 600 - 650°C (1112 - 1202°F)
- Hold for 2 hours per 25mm of section thickness
- Furnace cool to 500°C (932°F), then air cool
Tempering
- Number of Tempers: Minimum 2 times (highly recommended), 3 times for complex dies
- Method: Heat uniformly to required temperature; soak for 2 hours per 25mm of section thickness; then air cool
- Temperature vs. Hardness Chart
Why Choose NSPM as Your 1.2714 Tool Steel 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.
