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Steel 60S2HFA

Description

Steel 60S2HFA

Steel 60S2HFA: brand of steels and alloys. Below is a 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 60S2HFA.

General information of steel 60S2HFA

Substitute brand
steel: 60S2A, 60S2XA, 9HS, 60S2VA.
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. Strip GOST 103−76, GOST 4405−75. Forgings and forged billets GOST 14959−79, GOST 1133−71.
Application
responsible and highly loaded springs and springs made of round calibrated steel.

Chemical composition of steel 60S2HFA

Chemical element %
Vanadium (V) 0.10−0.20
Silicon (Si) 1.4−1.8
Manganese (Mn) 0.40−0.70
Copper (Cu), no more 0.20
Nickel (Ni), no more 0.25
Sulfur (S), no more 0.025
Carbon (C) 0.56−0.64
Phosphorus (P), no more 0.025
Chromium (Cr) 0.90−1.20

Mechanical properties of steel 60S2HFA

Mechanical properties

Heat treatment, delivery condition Section, mm σ 0.2, MPa σ B, MPa δ 5 ,% ψ,% KCU, J / m 2 HRC e
Steel categories: 3.3A, 3B, 3V, 3G, 4.4A, 4B. Hardening 870 ° С, oil, tempering 470 ° С. Samples 1470 1670 6 25    
Hardening 850 ° С, oil. Vacation 410 ° С, oil.   1670 1860 five      
Isothermal quenching with holding at 290 ° С   1780 1960 eleven 39 75  
Isothermal quenching with holding at 290 ° С, 1 h. Tempering 325 ° С. 60 1810 1960 8 38 67 45−51
Hardening 880 ° С, oil. Vacation 450−550 ° С 80 1540 1640 ten 35 44 45−49

Mechanical properties depending on the tempering temperature

vacation t, ° С σ 0.2, MPa σ B, MPa δ 5 ,% ψ,% KCU, J / m 2 HRC e
Hardening 880−890 ° С, oil.
200         thirty 59
250 2190 2340 6 20 thirty 58
300   2340 6 22 32 58
350 2160 2240       57
400 1870 1930 7 29 37 53
450 1690 1810 8 35 39 49
500 1540 1640 ten 35 44 46
550 1440 1530 ten 37 47 43

Technological properties of steel 60S2HFA

Forging temperature
Beginning 1200, end 800. Delayed cooling, subsequent heat treatment — annealing.
Weldability
not applicable for welded structures.
Tendency to release ability
not inclined

Endurance limit of steel 60S2HFA

σ -1, MPa τ -1, MPa σ B, MPa σ 0.2, MPa Heat treatment, steel condition
549 294 1900 1810 Quenching in oil. Vacation 415 С
588 309 1960 1780 Isothermal quenching with holding at 290 C.
613 328 1960 1780 Isothermal quenching with holding at 290 C. Tempering 325 C,

Hardenability of steel 60S2HFA

Hardening 880 ° C.

Distance from the end, mm / HRC e
3 ten fifteen 20 25 thirty 40 45 50 55
63.5 63.5 63.5 63 56 54.5 44.5 40.5 37 36
 

Physical properties of steel 60S2HFA

Test temperature, ° С 20 100 200 300 400 500 600 700 800 900
Normal elastic modulus, E, GPa 191                  
Torsional shear elastic modulus G, GPa 77                  

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