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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