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65S2WA, 65S2VA - spring steel

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Standards and chemical composition Specification Properties Treatment Replacements

65S2WA, 65C2BA - spring steel according to PN H-84035, GOST 14959

Standard Grade
Chemical composition %
C: Si; Mn: P: S: Cr: Ni: Cu: W: Al:
PN 65S2WA
0.61-0.69 1.5-2.0 0.7-1.0 <0,035 <0,030 <0,3 <0,4 <0,2 0.8-1.2 -
GOST 65S2VA - 65C2BА
0.61-0.69 1.5-2.0 0.7-1.0 <0,025 <0,025 <0,3 <0.25 <0,2 0.8-1.2 -
GOST 65S2VA-Sh - 65C2BА-Ш
0.61-0.69 1.5-2.0 0.3-1.0 <0,020 <0,015 <0,4 <0,4 <0,4 0.8-1.2 0.02-0.05
GOST 65S2VA-VD - 65C2BА-BД
0.61-0.69 1.5-2.0 0.3-1.0 <0,020 <0,015 <0,4 <0,4 <0,4 0.8-1.2 0.02-0.05
GOST 65S2GVA - 65C2ГBА
0.61-0.69 1.5-2.0 0.3-1.0 <0,025 <0,025 <0,4 <0,4 <0,2 0.8-1.2 0.02-0.05
GOST 65S2GVA-Sh - 65C2ГBA-Ш
0.61-0.69 1.5-2.0 0.3-1.0 <0,020 <0,015 <0,4 <0,4 <0,2 0.8-1.2 0.02-0.05
GOST 65S2GVA-VD - 65C2ГBA-ВД
0.61-0.69 1.5-2.0 0.3-1.0 <0,020 <0,015 <0,4 <0,4 <0,2 0.8-1.2 0.02-0.05
STAS 652SW
  0.61-0.69 1.5-2.0 0.7-1.0 <0,025 <0,025 <0,3 <0,25 <0,2 0.8-1.2

65S2WA – description

Steel used for loaded springs and torsion shafts in the automotive industry. Toughening steel with quite high hardenability.

Limited weldability. Requires preheating before welding. It is not resistant to any corrosive environment, including air.

65S2WA - Mechanical and Physical Properties

Physical properties in ambient temperature:

  • Density: 7,76 g/cm3
  • Linear expansion coefficient: 10,5 * 10-6 K-1

Mechanical properties of 65S2WA steel:

  • Round bars:
    • Heat-treated:
      • Yield strength Re: > 1665 MPa
      • Tensile strength Rm: > 1860 MPa
      • Elongation A: > 5 %
      • Percent reduction of area Z: > 20 %
      • Hardness: < 285 HB
      • Diameter cone impression: > 3,6 mm
    • Without heat-treatment:
      • Yield strength Re: > 1665 MPa
      • Tensile strength Rm: > 1860 MPa
      • Elongation A: > 5 %
      • Percent reduction of area Z: > 20 %
      • Hardness: < 321 HB
      • Diameter cone impression: > 3,4 mm
  • Wire for cold-coiling spring:
    • Tensile strength Rm: < 1030 MPa
  • Strip:
    • Annealed:
      • Tensile strength Rm: < 880 MPa
      • Elongation A: > 8 MPa
    • Cold-worked:
      • Tensile strength Rm: 780-1180 MPa
  • Helical springs:
    • General:
      • Hardness: 40,0-46,5 HRC
      • Hardness: 375-444 HB
    • Spring hardening:
      • Hardness: 42-49 HRC

Heat treatment and working

Recommended working and heat treatment parameters for 65S2WA alloy:

  • Forging: 1180-800 °C
  • Rolling: 1230-840 °C
  • Quenching: 835-865 °C / o
  • Tempering: 370-470 °C
  • Normalizing annealing: 840-860 °C
  • Soft annealing: 640-680 °C

We deliver this steel alloy as:

Substitutes, equivalents and other species designations

65S2WA
65S2GVA
65S2GVA-Sh
65S2GVA-VD
65S2VA
65SaVA-Sh
65S2VA-VD
652SW
65С2ВА
65С2ВА-Ш
65С2ВА-ВД
65С2ГВА
65С2ГВА-Ш
65С2ГВА-ВД

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