(20Cr13) 2Cr13 Stainless Steel Equivalent, Properties & Chemical Composition

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Scissors made from 20Cr13 steel 2Cr13 steel
Scissors made from 2Cr13 stainless steel

2Cr13 Stainless Steel Introduction

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%

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.

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 GradeCSi (≤)Mn (≤)P (≤)S (≤)CrNi (≤)
2Cr13
(20Cr13)
0.16 – 0.251.001.000.0400.03012.00 – 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)

2Cr13 Material Equivalent

2Cr13 (20Cr13) stainless steel equivalent to US ASTM AISI SAE, European (Germany DIN EN, France NF, UK BSI), Japanese JIS, and ISO standard.

You may also be interested in 2Cr13 vs 3Cr13 Steel

Equivalent (For reference)
ChinaUSAGermanyJapanFranceUKISO
StandardGradeStandardGrade (UNS)StandardGradeStandardGradeStandardGradeStandardGradeStandardGrade
GB/T 1220;
GB/T 3280
20Cr13
(2Cr13)
AISI,
ASTM A276A/276M,
ASTM A240/A240M
420
(S42000)
DIN EN 10088-2;
DIN 17440,
DIN 17222
X20Cr13 (1.4021)JIS G4303SUS 420J1NF A35-572;
NF A35-576-582;
NF A35-584
Z20C13BS 970,
BS 1449
420S37ISO 15510X20Cr13

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