2Cr13 Stainless Steel Introduction
Chinese 2Cr13 steel (20Cr13) is a martensitic stainless steel with magnetic properties, good corrosion resistance and high hardness in the quenched state. 2Cr13 stainless steel is used in a wide range of applications, such as cutting tools, surgical tools, and steam turbine blades, material density is 7.75g/cm3, 2Cr13 is an old representation, the new representation is 20Cr13.
Steel grade designation of 20Cr13 = 2Cr13 stainless steel
- 20 (or 2) – Average carbon content: 20/10,000 (0.2%), old designation is 2/1,000
- Cr – Chromium symbol
- 13 – Average content of chromium: 13%
Datasheet & Specification
The following tables list the 2Cr13 steel datasheet such as chemical composition and mechanical properties, etc.
Chemical Composition of (20Cr13) 2Cr13 Stainless Steel
| Chemical Composition (%) | |||||||
| Steel Grade | C | Si (≤) | Mn (≤) | P (≤) | S (≤) | Cr | Ni (≤) |
| 2Cr13 (20Cr13) | 0.16 – 0.25 | 1.00 | 1.00 | 0.040 | 0.030 | 12.00 – 14.00 | (0.60) |
The values in parentheses are the maximum values that can be added or allowed to be included.
(20Cr13) 2Cr13 Steel Mechanical Properties
For Hot Rolled Steel Bar After Quenching and Tempering
- Tensile strength: 640 N/mm2
- Conditional yield strength (Non-proportional extension strength): ≥440 N/mm2
- Elongation: ≥20%
- Rate of reduction in area: ≥50%
- Impact energy: ≥63 Aku2 (J)
- Material hardness:
- HBW: ≤ 223 (After annealing);
- HBW: ≥ 192 (After quenching and tempering)
Notes:
- Data is for steel diameter (d) less than or equal to 75mm.
- 1 N/mm2 = 1 MPa
For Cold Rolled Steel Plate and Strip After Annealing
- Tensile strength: 520 N/mm2
- Conditional yield strength (Non-proportional extension strength): ≥225 N/mm2
- Elongation: ≥18%
- Hardness:
- HBW: ≤ 223;
- HRB: ≤ 97;
- HV: 234
Physical Properties
- Density (g/cm3): 7.75
- Melting point: 1470-1510℃
- Specific heat capacity (J/Kg·K): 460 at 0-100℃
- Thermal conductivity (W/m·K):
- 22.2 at 100℃
- 26.4 at 500℃
- Coefficients of linear thermal expansion (10-6/K):
- 10.3 (0-100℃)
- 12.2 (0-500℃)
- Electrical Resistivity (μΩ·m): 0.55 at 20℃
- Longitudinal modulus of elasticity (kN/mm2): 200 at 20℃
Heat Treatment
- Annealing: 800-900℃ (Slow cooling)
- Quenching: 920-980℃ (Cooling: Oil)
Tempering: (600-750℃) (Rapid cooling)
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