Grade Application
1.2714 cold working tool steel is for general-purpose tools and dies where greater toughness is required, but with some sacrifice of abrasion resistance.
Typically used below applications
| spindles | forming rolls | punches | blanking and forming dies |
| trimmer dies | clutch parts | pawls | bearings |
| chucks parts | rollers | knuckle pins | clutch pins |
Equivalent Grades
| USA | Germany | China | Japan | France | England | Italy | Poland | Czechia | Austria | Russia | Inter |
| – | DIN,WNr | GB | JIS | AFNOR | BS | UNI | PN | CSN | ONORM | GOST | ISO |
| L6 | 55NiCrMoV6 | 5CrNiMo | SKT4 | 55NCDV7 | BH224-5 | 56NiCrMoV7 | 56NiCrMoV7-KU | WNLV | 19663 | W502 | 5KHNV |
Addition to other grades
MS, EN1A, EN3B, EN8, EN8D, EN9, EN19, EN24, EN31, EN32B, EN36C, EN41B, EN43B, EN47, EN353, IS2062, 42Crmo4, HCHCR, D2, D3, H-11, H-13, CW-1, OHNS, M2, M35, M42, DIN1.2714, P20, P20+S, P20+Ni, SCM420, ASTMSA-36, ASTMSA-105, SAE1018, SAE4140, SAE8620, 16MNCR5, 20MNCR5, C20, C45, C50, C60, CK45, 20C8, 40C8, 45C8, 55C8, C55MN75, SAE52100, S40C, S355J2G3.
Our Supply Range
We supply to automotive ancillaries and OEM customers. The products we manufacture are used as input for manufacturing of automotive and general engineering components. These components are further assembled into systems fitted in automobiles and other engineering applications.
| Product Type | Size Range |
|---|---|
| Forged Round Bars | 140mm Dia and above |
| Rolled Round Bars | 12mm Dia and above |
| Forged Flat Bars | Thickness: 32mm to 510mm, Width: 65mm to 1050mm |
| Rolled Flat Bars | Thickness: 6mm to 110mm, Width: 25mm to 810mm |
Mechanical Properties
| Hardness(HB) | Rp 0.2 Yield Strength | Rm Tensile Strength | Elongation | K C V 20°C | Elastic modulus | – | – | – |
| MPa | ksi | MPa | ksi | % | J | GPa | ksi | – |
| 376 | 1045 | 151 | 1270 | 184 | 10 | 40 | 205 | 29733 |
Chemical Composition
The following table shows the chemical composition of DIN 1.2714 steel:
| Element | C | Si | Mn | Ni | P | S | Cr | Mo | V |
| Content (%) | 0.5 – 0.6 | 0.1 – 0.4 | 0.6 – 0.9 | 1.5 – 1.8 | 0.03 Max | 0.03 Max | 0.8 – 1.2 | 0.35 – 0.55 | 0.05 – 0.15 |
Heat Treatment
Heat treatment temperatures, rate of heating, cooling, and soaking times will vary due to factors such as the shape and size of each component. Other considerations during the heat treatment process include the type of furnace, quenching medium, and workpiece transfer facilities.
Hardness
Annealing 255 HB max, Q+T: 58-38HRc, different hardness according to different Tempering temperature.
Hardening
Hardening temperature/℃: 840~870, Quenching in oil
Thermal Properties
| Thermal conductivity (°C) | 20 | 350 | 700 |
| W/(m*K) | 35.0 | 39.0 | 36.0 |
Forging Properties
For forging 1.2714 steel, Slowly Pre-heat, at Hot-working temperature/℃: 1050~850
Stress Relieving
When tools made from 1.2714 steel are heavily machined or ground, the relief of internal strains is advisable before hardening to minimize the possibility of distortion. Stress-relieving of this grade should be done after rough machining. To stress relief, heat the component carefully to 600-650°C, allow a good soaking period, about two hours per 25mm of section. Cool in the furnace to 500°C then freely in the air. Tools may then be finish machined before hardening.
Physical Properties
- Density: 7.85kg/m3
- Thermal conductivity
- Forging ratio: 4:1 Minimum
- Microstructure
- Magnetic
Tempering
Commonly used drawing temperature/℃: 400~650; tempering after-hardening values /MPa|400℃: 1770; tempering after-hardening values /MPa|500℃: 1570; tempering after-hardening values /MPa|600℃: 1320; tempering after-hardening values /MPa|650℃: 1180
Normalizing
Because of its air-hardening ability, 1.2714 – Hot-Work Mould Steel should not be normalized.
Annealing
Annealing temperature/℃: 680~710; After the annealing, degree of hardness ≤HBS: 250
Density
Density: 7.85kg/m3
Welding
Stress tempering for prehardened condition.
Machinability
The machinability of tool steel L6 is very good. It rates 90% of the machinability of the W-group water hardening low alloy steels rated 100% as a baseline.
