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Steel 65S2VA

VSt6ps VSt5sp VSt3kp VSt4kp VSt6sp VSt2kp Vst4ps St0 VSt2ps VSt3ps VSt5ps VSt2sp VSt3sp 18К 08ps 10ps 15К 18kp 20ps 35 55 05kp 08Ю 15kp 20 (20А) 22К 40 58 (55ПП) 08 10 (Art. 10) 12К 15pc 20К 25 45 60 08kp 10kp 15 16К 20kp 30 50 0cB 60С2 60C2XA 50XFA 60C2A 60C2CHFA 65C2VA 85 55XGR 65 70C3A 55С2 60Г 60C2H2A 65Г 70 75 SHKH15 SHKH15SG SH4 А12 А20 A40G А30 10XNDP 14G2AF 15G2AFDps 17GS 18G2AFps 09Г2 10G2BD 10ХСНД 12GS 15G2SFD 16GS 35GS 14CGS 15ХСНД 20ХГ2Ц 09G2S 10G2S1 14Г2 16G2AF 17G1S 25G2S 10Г2 14X2GMR 15KHF 18CR2N4MA 20Г 20X2H4A 20XGR 20KHN2M (20KHNM) 30Г 30CGS 30CRNI2MA 34CRNI3M 35Х 38CR2N3M 38XA 38CMA 3CR3M3F 40Х 40XFA 45CRN 50Г2 12XH2 15Х 20KHGSA 20XHN3A 25CGSA 30KHGSA 30CRNI2MOVA 33HS 35KHN1M2FA 38CR2NM 40Г 40CR2H2MA 40CRN 45Г 45CRNI2MOVA 50Х 12XH2A 18CGT 20CRNR 20CRNI4FA 25CGT 30Х 30CGSN2A 30KHN3A 34CRNI1M 35Г 36CR2NI2MOVA 38KH2NMF 38CRN 38CRNI3MA 40Г2 40CRNI2MA 45Г2 47GT 50XH 12CR2N4A 12XHN3A 15Г 18CR2N4VA 20Х 20XH 20XNR 30CGT 30ХН3М2ФА 35Г2 35CGSA 38CR2H2MA 38CRNI3MOVA 40HS 45Х 50Г

Description

Steel 65S2VA

Steel 65S2VA: brand of steels and alloys. Below is the systematized information on the purpose, chemical composition, types of supplies, substitutes, temperature of critical points, physical, mechanical, technological and casting properties for the grade — Steel 65S2BA.

General information of steel 65S2VA

Substitute brand
steel: 60S2A, 60S2XA.
Delivery type
Long products, including shaped: GOST 14959−79, GOST 2590−71, GOST 2591−71, GOST 2879−69, GOST 7419.0−78 — GOST 7419.8−78. Calibrated bar GOST 14959−79, GOST 7417−75, GOST 8559−75, GOST 8560−78. Polished bar and silver bar GOST 14959−79, GOST 7419.0−78 — GOST 7419.8−78. Tape GOST 2283−79. Strip GOST 103−76, GOST 4405−75. Wire GOST 14963−78. Forgings and forged billets GOST 14959−79, GOST 1133−71.
Application
responsible and highly loaded springs and springs.

Chemical composition of steel 65S2VA

Chemical element %
Tungsten (W) 0.80−1.20
Silicon (Si) 1.5−2.0
Manganese (Mn) 0.70−1.0
Copper (Cu), no more 0.20
Nickel (Ni), no more 0.25
Sulfur (S), no more 0.025
Carbon (C) 0.61−0.69
Phosphorus (P), no more 0.025
Chromium (Cr), no more 0.30

Mechanical properties of steel 65S2VA

Mechanical properties

Heat treatment, delivery condition σ 0.2, MPa σ B, MPa δ 5 ,% ψ,%
Steel categories: 3.3A, 3B, 3V, 3G, 4.4A, 4B. Hardening 850 ° С, oil, tempering 420 ° С. 1665 1860 five 20

Mechanical properties depending on the tempering temperature

vacation t, ° С σ 0.2, MPa σ B, MPa δ 5 ,% ψ,% KCU, J / m 2
Isothermal quenching with holding at 270 ° C.
  1750 2110 8 38 44
150 1810 2010 nine 38 44
280 1830 1930 eleven 38 51
310 1830 1930 ten 40 53
400 1790 1860 eleven 40 50

Mechanical properties versus test temperature

test t, ° C σ 0.2, MPa σ B, MPa δ 5 ,% ψ,% KCU, J / m 2
Hardening 860 ° C, oil. Vacation 400 ° С
20 1860 2060 8 thirty 28
200 1670 2060 ten 33 24
300 1570 1810 eleven 29  
400 1370 1620 fifteen 60  
-20 1960 2110 8 27 25
-50 2010 2160 8 26 22
Hardening 860 ° C, oil. Vacation 450 ° C.
20 1670 1760 ten 35 26
200 1370 1710 ten thirty 26
300 1270 1570 eleven 21  
400 1180 1370 fifteen 50  
-20 1710 1810 ten 33 24
-50 1760 1860 ten 32 24

Technological properties of steel 65S2VA

Forging temperature
Beginning 1100, end 900.
Weldability
not applicable for welded structures.
Tendency to release ability
not inclined
Flock sensitivity
not sensitive

Physical properties of steel 65S2VA

Test temperature, ° С 20 100 200 300 400 500 600 700 800 900
Normal elastic modulus, E, GPa 211 206 200 195 185 178 154 136 131  
Torsional shear elastic modulus G, GPa 82 80 78 74 70 67 58 51 49  
Density of steel, pn, kg / m 3 7850                  
Thermal conductivity coefficient W / (m ° С) 27 27 28 29 29 29 29 28 28  
Test temperature, ° С 20−100 20−200 20−300 20−400 20−500 20−600 20−700 20−800 20−900 20−1000
Linear expansion coefficient (a, 10−6 1 / ° С) 11.5 12.5 13.0 13.5 13.8 14.3 14.5 13.5    
Specific heat (C, J / (kg ° C)) 475 500 510 530 555 580 615 690    

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