Steel 60S2XA
Description
Steel 60S2XA
Steel 60S2XA: 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 60S2XA.
General information of steel 60S2XA
| Substitute brand |
| steel: 60S2HFA, 60S2H2A. |
| 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 14959−79, GOST 14955−77, GOST 7419.0−78 — GOST 7419.8−78. Strip GOST 103−76, GOST 4405−75. Forgings GOST 14959−79, GOST 1133−71. |
| Application |
| for the manufacture of large high-load springs and springs for critical purposes. |
Chemical composition of steel 60S2XA
| Chemical element |
% |
| 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) |
0.70−1.00 |
Mechanical properties of steel 60S2XA
Mechanical properties
| Heat treatment, delivery condition |
σ 0.2, MPa |
σ B, MPa |
δ 5 ,% |
ψ,% |
KCU, J / m 2 |
HB |
| Steel categories: 3.3A, 3B, 3V, 3G, 4.4A, 4B. Hardening 870 ° С, oil, tempering 470 ° С. |
1325 |
1470 |
6 |
25 |
|
|
| Hardening 870 ° С, oil. Vacation 420 ° С, oil. |
1570 |
1760 |
five |
20 |
29 |
|
| Springs. Annealing 860 ° С, hot winding 850−890 ° С. Hardening 850−870 ° С, oil. Vacation 400−420 ° C. |
|
|
|
|
|
420−475 |
| Isothermal quenching with holding at 290 ° C. |
1720 |
1950 |
ten |
46 |
73 |
|
| Isothermal quenching with holding at 290 ° C. Vacation 325 ° C. |
1760 |
1920 |
8 |
45 |
50 |
|
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 ° C. |
| 200 |
|
|
|
|
23 |
59 |
| 250 |
2270 |
2380 |
|
28 |
27 |
58 |
| 300 |
2210 |
2340 |
6 |
26 |
26 |
58 |
| 350 |
2020 |
2240 |
8 |
26 |
23 |
57 |
| 400 |
1830 |
1990 |
8 |
38 |
37 |
52 |
| 450 |
1600 |
1730 |
nine |
39 |
53 |
48 |
| 500 |
1400 |
1530 |
ten |
38 |
47 |
44 |
| 550 |
1240 |
1380 |
ten |
38 |
60 |
40 |
Technological properties of steel 60S2XA
| Forging temperature |
| The beginning is 1200, the end is 800. |
| Weldability |
| not applicable for welded structures. |
| Tendency to release ability |
| not inclined |
| Flock sensitivity |
| not sensitive |
Temperature of critical points of steel 60S2XA
| Critical point |
° C |
| Ac1 |
765 |
| Ac3 |
780 |
| Ar1 |
700 |
Endurance limit of steel 60S2XA
| σ -1, MPa |
σ B, MPa |
σ 0.2, MPa |
Heat treatment, steel condition |
| 540 |
1980 |
1830 |
Oil quenching. Vacation 400 С. НВ 495 |
| 568 |
1950 |
1720 |
Isothermal quenching with holding at 290 C. |
| 578 |
1950 |
1720 |
Isothermal quenching with holding at 290 C. Tempering 325 C. |
Hardenability of steel 60S2XA
Hardening 880 ° C.
| Distance from the end, mm / HRC e |
| 3 |
five |
ten |
fifteen |
20 |
25 |
thirty |
35 |
| 62.5 |
62.5 |
61.0 |
57.0 |
48.0 |
40.5 |
36.5 |
35.5 |
Physical properties of steel 60S2XA
| Test temperature, ° С |
20 |
100 |
200 |
300 |
400 |
500 |
600 |
700 |
800 |
900 |
| Normal elastic modulus, E, GPa |
196 |
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| Torsional shear elastic modulus G, GPa |
78 |
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