65G and 65G1 Spring Steel

  • 70G steel
  • Steel 60S2HFA
  • Steel 60KhFA (60KhF)
  • Steel 65
  • Steel 65G (65G1)
  • Steel 65GA
  • Steel 65S2VA
  • Steel 68A
  • Steel 68GA
  • Steel 70
  • Steel 60S2HG
  • Steel 70G2
  • Steel 70S2HA (EI142)
  • Steel 70C3A
  • 70KhGFA steel
  • Steel 75
  • Steel 80
  • Steel 85
  • KT-2 steel
  • KT-3 steel
  • Steel 55S2A
  • Steel 3K-7
  • Steel 40P
  • Steel 50RA (50P)
  • 50KhG steel
  • 50KhGA steel
  • 50KhGFA steel
  • Steel 50KhFA (50KhF)
  • 51KhFA steel
  • Steel 55C2
  • Steel 60С2Х (60С2ХА; 60С2ХАA)
  • Steel 55S2GF
  • Steel 55KhGR
  • Steel 55KhFA (55KhF)
  • 60G steel
  • Steel 60C2
  • Steel 60S2A
  • Steel 60S2G
  • Steel 60C2H2A

    • Designation

    Name The value
    Designation GOST Cyrillic 65Г
    Designation GOST Latin 65G
    Transliteration 65G
    By chemical elements 65Mn
    Name The value
    Designation GOST Cyrillic 65Г1
    Designation GOST Latin 65G1
    Transliteration 65G1
    By chemical elements 65Mn1

    Description

    Material overview

    65G and 65G1 are spring-steel designations used for parts that obtain their working strength and elastic behavior through controlled processing and heat treatment. Final performance depends on section size, delivered condition, forming route and the purchaser-approved heat-treatment procedure, not on the grade name alone.

    Product forms and sourcing

    Sourcing can be reviewed for round bar, flat bar, sheet, strip, wire and cut blanks. Specify thickness, width and coil requirement for strip; diameter, length and straightness for bar or wire; and any edge, surface, decarburization or machining-allowance requirement.

    Evek LLC reviews each requirement against the requested grade, specification, form and quantity. Availability is confirmed during quotation; website text is not a stock or compliance guarantee.

    Specification and substitution

    Potential EN, DIN, SAE or AISI alternatives must be evaluated against the controlling standard and application. Similar nominal carbon or manganese content does not guarantee identical hardenability, cleanliness, tolerances or mechanical response. The responsible engineer must approve any substitute before purchase.

    The purchaser remains responsible for material selection, design approval and confirmation that the specified material is suitable for the finished component and service environment.

    Information required for a quote

    Send the complete grade and standard revision, form, dimensions, quantity, delivery condition, target hardness if applicable, surface and edge requirements, testing, heat traceability and certificate requirements. Include the part application, U.S. delivery ZIP code and whether partial or trial quantities can be considered.

    Related products and resources

    Review spring steel guide, 60S2 / 60Si7 spring steel, alloy steel products, or contact Evek LLC for assistance with the requirement.

    Request a U.S. quote

    Evek LLC serves customers throughout the United States. Typical delivery is 2-3 weeks, subject to grade, specification, form, dimensions, quantity and availability.

    Contact Evek LLC with the complete requirement and U.S. delivery ZIP code.

    Standards

    Name Code Standards
    Bars and shapes В32 GOST 1051-73, GOST 7417-75, GOST 7419-90, GOST 8559-75, GOST 8560-78, GOST 14955-77, GOST 14959-79, TU 14-1-2118-77, TU 14-1-3287-81, TU 14-1-3861-84, TU 14-11-245-88, TU 14-1-1271-75, TU 14-136-367-2008
    Bars and shapes В22 GOST 1133-71, GOST 8278-83, GOST 8281-80, GOST 8282-83, GOST 8283-93, GOST 9234-74, GOST 11474-76, GOST 17152-89, GOST 2590-2006, GOST 2591-2006, GOST 2879-2006
    Fittings, components and parts for railway rolling stock Д55 GOST 11530-93
    Sheets and strips В33 GOST 1577-93, GOST 4405-75, TU 14-1-1832-76, TU 14-1-2004-77, TU 14-1-4118-86, TU 14-1-417-72, TU 14-1-4516-88, TU 14-229-284-89, TU 14-15-330-94, TU 14-1-4118-2004
    Test methods. Packing. Marking Л19 GOST 19030-73
    Tape В34 GOST 2283-79, GOST 10234-77, GOST 21997-76, TU 1231-004-20504276-2000, TU 3-939-81, TU 14-4-469-73, TU 14-4-473-73, TU 14-4-281-73
    Low carbon steel wire В71 GOST 3875-83
    Sheets and strips В23 GOST 82-70, GOST 103-2006
    Steel wire medium and high carbon В72 GOST 9389-75, GOST 11850-72, GOST 26366-84, TU 3-663-85, TU 14-4-378-73, TU 14-4-386-73, TU 14-4-855-77
    Classification, nomenclature and General rules В20 OST 1 90005-91

    Chemical composition

    Standard C S P Mn Cr Si Ni Fe Cu
    GOST 14959-79 0.62-0.7 ≤0.035 ≤0.035 0.9-1.2 ≤0.25 0.17-0.37 ≤0.25 Rest ≤0.2
    GOST 17152-89 (ИСО 7129-82 0.62-0.7 ≤0.035 ≤0.035 0.9-1.2 ≤0.25 0.17-0.37 ≤0.25 Rest ≤0.2
    Fe is the basis.
    According to GOST 17152-89 (ISO 7129-82), according to the manufacturer's agreement with the customer, the profiles are made with the elements content: С ≤ 0.80%, Mn ≤ 1.40%. The upper limits of carbon and manganese should not coincide. The austenitic grain size should not be larger than 5 numbers in accordance with GOST 5639.

    Mechanical properties

    Section, mm t отпуска, °C sT|s0,2, MPa σU, MPa d5, % d4 d d10 y, % HRC HV, MPa
    Tape flatted average strength of 0.1-4.0 mm according to GOST 10234-77 in the state of delivery (indicated delivery)
    - - - 780-1270 - - - - - - -
    - - - 780-930 - - - - - - -
    - - - 930-1080 - - - - - - -
    - - - 1080-1230 - - - - - - -
    - - - ≤780 - - ≥10 - - - -
    - - - ≤570 - - - - - - -
    Carden wire 0.2-0.8 mm as supplied by GOST 3875-83 (samples)
    - - - 2160-2350 - - - - - - -
    - - - 2351-2550 - - - - - - -
    Wire square, rectangular and trapezoidal cross sections according to GOST 11850-72
    0.6-12 - - 590-780 - - - - - - -
    Rolled steel. Hardened in oil from 830 °C to + Vacation
    - 200 ≥1790 ≥2200 ≥4 - - - ≥30 ≥61 -
    Rolled steel. Hardened in oil from 830 °C to + Vacation at 350 °C
    - - ≥1370 ≥1670 ≥15 - - - ≥44 - -
    Gradation of performance properties of the finished heat-treated parts for OST 1 90005-91
    - - - - - - - - - 44-48 -
    Wire square, rectangular and trapezoidal cross sections according to GOST 11850-72
    0.6-12 - - 490-780 - - - - - - -
    Rolled steel. Hardened in oil from 830 °C to + Vacation
    - 400 ≥1450 ≥1670 ≥8 - - - ≥48 ≥46 -
    Rolled steel. Hardened in oil from 830 °C to + Vacation at 350 °C
    - - ≥1220 ≥1370 ≥19 - - - ≥52 - -
    Flattened strip (0.15 to 2.00 mm) spring for heat-treated parts and springs according to GOST 21997-76 (listed group strength tape)
    - - - 1270-1570 - - - - - - 375-485
    Wire square, rectangular and trapezoidal cross sections according to GOST 11850-72
    0.6-3 - - ≤1130 - - - - - - -
    Rolled steel. Hardened in oil from 830 °C to + Vacation
    - 600 ≥850 ≥880 ≥15 - - - ≥51 ≥30 -
    Rolled steel. Hardened in oil from 830 °C to + Vacation at 350 °C
    - - ≥980 ≥1000 ≥20 - - - ≥70 - -
    Flattened strip (0.15 to 2.00 mm) spring for heat-treated parts and springs according to GOST 21997-76 (listed group strength tape)
    - - - 1580-1860 - - - - - - 486-600
    Wire square, rectangular and trapezoidal cross sections according to GOST 11850-72
    3-5 - - ≤980 - - - - - - -
    Flattened strip (0.15 to 2.00 mm) spring for heat-treated parts and springs according to GOST 21997-76 (listed group strength tape)
    - - - ≥1860 - - - - - - ≥600
    Wire square, rectangular and trapezoidal cross sections according to GOST 11850-72
    0.6-3 - - ≤1230 - - - - - - -
    Cold-rolled steel strip of 0.1-4.0 mm according to GOST 2283-79 on delivery
    0.1-1.5 - - ≤640 - ≥15 - - - - -
    1.5-4 - - ≤740 - ≥10 - - - - -
    0.1-1.5 - - ≤630 - ≥15 - - - - -
    1.5-4 - - ≤630 - ≥11 - - - - -
    0.1-4 - - 740-1180 - - - - - - -
    Hot-rolled sheet. After normalization
    ≤80 - - ≥730 ≥12 - - - - - -
    Flats on the other 14-1-4118-2004
    - - 590-830 - ≥10 - ≥12 - - -
    Rolled steel. Quenching in oil with 790-820 °C + Vacation at 550-580 °C, air cooling
    40-60 - ≥690 ≥880 ≥8 - - - ≥30 30-35 -
    Rolled steel. Quenching in oil from 800-820 °C + Vacation at 340-380 °C, air cooling
    20 - ≥1220 ≥1470 ≥5 - - - ≥10 44-49 -
    Rolled steel. Steel categories: 3, 3A, 3B, 3C, 3D, 4, 4A, 4B. Hardened in oil from 830 °C to + vacation at 470 °C
    - ≥785 ≥980 ≥8 - - - ≥30 - -

    Description mechanical marks

    Name Description
    sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
    σU Limit short-term strength
    d5 Elongation after rupture
    d4 Elongation after rupture
    d Elongation after rupture
    d10 Elongation after rupture
    y The relative narrowing
    HRC Rockwell hardness (indenter diamond spheroconical)
    HV The Vickers hardness

    Physical characteristics

    Temperature Е, HPa G, HPa r, kg/m3 l, W/(m · °C) a, 10-6 1/°C С, J/(kg · °C)
    0 215 84 7850 37 - -
    20 215 - 7850 37 - -
    100 213 83 7830 36 118 490
    200 207 80 7800 35 126 510
    300 200 77 - 34 132 525
    400 180 70 7730 32 136 560
    500 170 65 - 31 141 575
    600 154 58 - 30 146 590
    700 136 51 - 29 145 625
    800 128 48 - 28 145 625
    1000 - - - - 118 705

    A description of the physical symbols

    Name Description
    Е The normal elasticity modulus
    G Modulus of elasticity shear torsion
    r Density
    l Coefficient of thermal conductivity
    R UD. the resistivity
    a The coefficient of linear expansion
    С Specific heat

    Technological properties

    Name The value
    Weldability Does not apply to welded structures. KTS - no restrictions.
    Склонность к отпускной хрупкости Inclined when the content of Mn ≥ 1,0 %.
    The temperature of forging Start - 1250 °C, the end - 760-780 °C. the cooling of the workpiece cross-section up to 100 mm can be carried out in air, section 101-300 mm - mulde.
    Flock-sensitive sensitivity Insensitive.
    Machinability In the hardened and tempered condition, when blower SB 240 HB=820 MPa Kn TV.SPL.=0,85 Kn b.St.=0,80.