What is 4Cr13 material ?
4Cr13 is a martensitic stainless steel known for its high strength, wear resistance, and good corrosion resistance, making it suitable for applications requiring hardness and durability, such as plastic molds, tools, and medical equipment. The "4Cr" indicates a carbon content of approximately 0.4%, and it is also designated as 40Cr13 in China.
What is 4Cr13 stainless steel equivalent to?
4Cr13 stainless steel is equivalent to X39Cr13 in European and ISO standards, and to UNS S42000 or 420 in American standards. Other equivalent grades include SUS420J2 (JIS) and 1.2083 (German).
| Standard | Equivalent Grade |
|---|---|
| China | 4Cr13 / 40Cr13 (new designation) |
| European | X39Cr13 / 1.4031 |
| ISO | X39Cr13 / 4031-420-00-I |
| USA | UNS S42000 / 420 |
| Japan | SUS420J2 |
| Germany | X39Cr13 / 1.2083 |
4Cr13 Stainless Steel Data Sheet (Chemical & Mechanical Properties)
Chemical Composition (%)
| Code in GB/T 20878 | Unified numerical code | New Grade | Original Grade | Chemical compositions (mass fraction) % | ||||||||||
| C | Si | Mn | P | S | Ni | Cr | Mo | Cu | N | Other elements | ||||
| 104 | S42040 | 40Cr13 | 4Cr13 | 0.36~0.45 | 0.6 | 0.8 | 0.04 | 0.03 | (0.60) | 12.00 ~ 14.00 | – | – | – | – |
Mechanical Properties (Annealed Condition)
| Code in GB/T 20878 | Unified numerical code | New Grade | Original Grade | Mechanical property of test piece through quench tempering | Hardness of annealed steel bars | ||||||
| Proof strength, non-proportional extension Rp0.2/(N/mm2) | Tensile strength Rm/(N/mm2) | Stretching rate after breaking A/% | Section shrinkage rate Zb/% | Impact absorbing energy Aku2d/J | HBW | HRC | HBW | ||||
| No less than | No more than | ||||||||||
| 104 | S42040 | 40Cr13 | 4Cr13 | – | – | – | – | – | 50 | 235 | |
Physical properties
| Code in GB/T 20878 | Unified numerical code | New Grade | Original Grade | Density /(g/cm3) 20 ℃ | Melting point ℃ | Specific heat capacity (kJ/Kg · K) | Thermal conductivity (W/m·K) | Coefficients of linear thermal expansion (10-6/K): | Electrical Resistivity (Ω·mm2/m) 20 ℃ |
Longitudinal modulus of elasticity (kN/mm2) 20 ℃ | ||
| 100 ℃ | 500 ℃ | 0～100 ℃ | 0 ～ 500 ℃ | |||||||||
| 104 | S42040 | 40Cr13 | 4Cr13 | 7.75 | 0.46 | 28.1 | 28.90 | 10.50 | 12.00 | 0.590 | 215 | |
What is the difference between 4Cr13 and D2 steel?
4Cr13 is a low-cost stainless steel that is easy to sharpen and rust-resistant but may not retain its edge, as well as D2 steel. D2 steel is a high-end tool steel that is more durable and retains its edge better but is less rust-resistant and may require more maintenance.
Is 4Cr13 steel good for knives?
Yes, 4Cr13 steel is good for knives, especially for kitchen use, because it offers a strong balance of corrosion resistance, easy sharpening, and durability at a budget-friendly price. While it may not hold an edge as long as premium steels, its rust resistance makes it a practical and user-friendly option for everyday tasks.
If you have any project needs for 4Cr13 stainless steel bars, please feel free to place an order. GNEE has a large inventory of popular products for you to choose from. They can be processed into various practical product forms, including plates, coils, pipes, bars, and wires. For detailed chemical composition and free samples, please contact our factory immediately. We offer competitive prices and excellent service.
