(20Cr13) 2Cr13 stainless steel equivalent, properties and chemical composition

Introduction to 2Cr13 stainless steel

Chinese Steel 2Cr13 (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, the material density is 7.75g/cm3, 2Cr13 is an old representation, the new representation is 20Cr13.

20Cr13 steel grade designation = 2Cr13 stainless steel

• 20 (or 2) – Average carbon content: 20/10,000 (0.2%), the old designation is 2/1,000
• Cr – chrome symbol
• 13 – Average chromium content: 13%

Datasheet and specifications

The following tables list the data sheet of 2Cr13 steel such as chemical composition and mechanical properties, etc.

Chemical Composition of Stainless Steel (20Cr13) 2Cr13

The values ​​in parentheses are the maximum values ​​that can be added or included.

(20Cr13) Mechanical Properties of 2Cr13 Steel

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%
• Reduction rate in area: ≥50%
• Impact energy: ≥63 Aku2 (J)
• Hardness of materials:
  • HBW: ≤ 223 (after annealing);
  • HBW: ≥ 192 (after quenching and tempering)

Grades:

• Data are for steel diameter (d) less than or equal to 75 mm.
• 1 N/mm2 = 1 MPa

For cold-rolled steel sheets and strips after annealing

• Tensile strength: 520 N/mm2
• Conditional yield strength (non-proportional extension strength): ≥225 N/mm2
• Elongation: ≥18%
• Toughness:
  • PNQ: ≤ 223;
  • HRB: ≤ 97;
  • AV: 234

Physical properties

• Density (g/cm3): 7.75
• Melting point: 1470-1510 ℃
• Specific heat capacity (J/Kg·K): 460 at 0-100°C
• Thermal conductivity (W/m·K):
  • 22.2 to 100°C
  • 26.4 at 500°C
• Linear thermal expansion coefficients (10 ^-6 /K):
  • 10.3 (0-100°C)
  • 12.2 (0-500°C)
• Electrical Resistivity (μΩ·m): 0.55 at 20℃
• Longitudinal modulus of elasticity (kN/mm2): 200 to 20°C

Heat treatment

• Annealing: 800-900℃ (slow cooling)
• Quenching: 920-980°C (Cooling: Oil)
• Quenching: (600-750℃) (rapid cooling)

Equivalent 2Cr13 material

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

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