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Steel 60S2N2A

Description

Steel 60S2N2A

Steel 60S2N2A: a 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 60S2N2A.

General information of steel 60S2N2A

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 7417−75, GOST 8559−75, GOST 8560−78. Polished bar and silver bar GOST 14955−77, GOST 7419.0−78 — GOST 7419.8−78. Strip GOST 103−76, GOST 4405−75. Forgings and forged billets GOST 1133−71.
Application
responsible and heavily loaded springs and springs.

Chemical composition of steel 60S2N2A

Chemical element %
Silicon (Si) 1.4−1.8
Manganese (Mn) 0.40−0.70
Copper (Cu), no more 0.30
Nickel (Ni) 1.4−1.7
Sulfur (S), no more 0.025
Carbon (C) 0.56−0.64
Phosphorus (P), no more 0.025
Chromium (Cr), no more 0.30

Mechanical properties of steel 60S2N2A

Mechanical properties

Heat treatment, delivery condition σ 0.2, MPa σ B, MPa δ 5 ,% ψ,% HB
Steel categories: 3.3A, 3B, 3V, 3G, 4.4A, 4B. Hardening 870 ° С, oil, tempering 470 ° С. 1325 1470 8 thirty  
Annealing 720 ° C, oven. 410 700 19 50  
Springs. Annealing or tempering before drawing 730 ° С, hot winding 850−900 ° С, quenching 850−870 ° С, oil. Vacation 380−420 ° С, air.         420−475
Hardening 850 ° С, oil. Vacation 420 ° С, air. 1570 1710 five 20  

Mechanical properties depending on the tempering temperature

vacation t, ° С σ 0.2, MPa σ B, MPa δ 5 ,% ψ,%
Hardening 870 ° C
380 1780 1920 6 40
400 1690 1760 6 41
420 1530 1640 7 41
440 1390 1490 8 42
460 1360 1440 8 41
480 1230 1340 nine 40
500 1210 1300 ten 41
520 1100 1170 12 43

Technological properties of steel 60S2N2A

Forging temperature
Beginning 1150, end 850.
Weldability
not applicable for welded structures.
Tendency to release ability
not inclined
Flock sensitivity
sensitive

Temperature of critical points of steel 60S2N2A

Critical point ° C
Ac1 765
Ac3 780

Hardenability of steel 60S2N2A

Distance from the end, mm / HRC e
 
 
Heat treatment Crit. Diam. in oil, mm
Hardening 50

Physical properties of steel 60S2N2A

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 78                  

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