2Cr13 20Cr13 S42020 Stainless Steel
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%
2Cr13 Material Equivalent
| China | USA | Germany | Japan | ||||
| Standard | Grade | Standard | Grade (UNS) | Standard | Grade | Standard | Grade |
| GB/T 1220; | 20Cr13 | AISI, | 420 | DIN EN 10088-2; | X20Cr13 (1.4021) | JIS G4303 | SUS 420J1 |
Chemical Composition Of (20Cr13) 2Cr13 Stainless Steel
| C | Si (≤) | Mn (≤) | P (≤) | S (≤) | Cr | Ni (≤) |
| 0.16 – 0.25 | 1 | 1 | 0.04 | 0.03 | 12.00 – 14.00 | -0.6 |
(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
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)
We also supply :
1.2510/H10, 1.2842, 1.2379/D2, 1.2080/X210Cr12/D3, 1.2436, 1.2365, 1.2885, 1.2343, 1.2344/H13/SKD61, 1.2581/H21, 1.2709, 1.2345, 1.2738/P20NI, 1.2083/420J2, 1.2316, 1.2312/P20S, 1.2311, 1.2764
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