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Grade : | 65S2VА ( 65С2ВА ) ( 65С2ГВА ) |
Substitute: | 60С2А, 60С2ХА |
Classification : | Spring structural steel |
Equivalent grades: | Go here |
C | Si | Mn | Ni | S | P | Cr | W | Cu |
0.61 - 0.69 | 1.5 - 2 | 0.7 - 1 | max 0.25 | max 0.025 | max 0.025 | max 0.3 | 0.8 - 1.2 | max 0.2 |
Assortment | Dimension | Direct. | sв | sT | d5 | y | KCU | Heat treatment |
- | mm | - | MPa | MPa | % | % | kJ / m2 | - |
Band annealed , GOST 2283-79 | 0.1 - 4 | 880 | 8 | |||||
Band cold-worked , GOST 2283-79 | 0.1 - 4 | 780-1180 | ||||||
Steel, GOST 14959-79 | 1860 | 1665 | 5 | 20 | Guenching 850oC, oil, Drawing 420oC, |
Brinell hardness for 65S2VА ( 65С2ВА ) (without heat treatment) , GOST 14959-79 | HB 10 -1 = 321 MPa |
Brinell hardness for 65S2VА ( 65С2ВА ) (heat treatment) , Rolled stock GOST 14959-79 | HB 10 -1 = 285 MPa |
Weldability: | is not used. |
Flakes : | not predisposed |
Temper brittleness: | not predisposed |
T | E 10- 5 | a 10 6 | l | r | C | R 10 9 |
Grade | MPa | 1/Grade | Watt/(m·Grade) | kg/m3 | J/(kg·Grade) | Ohm·m |
20 | 2.11 | 27 | 7850 | |||
100 | 2.06 | 11.5 | 27 | 475 | ||
200 | 2 | 12.5 | 28 | 500 | ||
300 | 1.95 | 13 | 29 | 510 | ||
400 | 1.85 | 13.5 | 29 | 530 | ||
500 | 1.78 | 13.8 | 29 | 555 | ||
600 | 1.54 | 14.3 | 29 | 580 | ||
700 | 1.36 | 14.5 | 28 | 615 | ||
800 | 1.31 | 13.5 | 28 | 690 | ||
T | E 10- 5 | a 10 6 | l | r | C | R 10 9 |
France | Bulgaria | Poland | Romania | ||||
AFNOR | BDS | PN | STAS | ||||
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В22 - Graded and shaped rolling |
B23 - Sheets and Strips |
В32 - Graded and shaped rolling |
B33 - Sheets and Strips |
B34 - Ribbons |
В72 - Medium-high and high-carbon steel wire |
B73 - Steel Alloy Wire |
Mechanical properties : | |
sв | - Tensile strength , [MPa] |
sT | - Yield stress, [MPa] |
d5 | - Specific elongation at fracture , [ % ] |
y | - Reduction of area , [ % ] |
KCU | - Impact strength , [ kJ / m2] |
HB | - Brinell hardness , [MPa] |
Physical properties : | |
T | - Test temperature , [Grade] |
E | - Young modulus , [MPa] |
a | - Coefficient of linear expansion (range 20o - T ) , [1/Grade] |
l | - Termal (heat) condition coefficient , [Watt/(m·Grade)] |
r | - Density , [kg/m3] |
C | - Specific heat ( range 20o - T ), [J/(kg·Grade)] |
R | - Electrical resistance , [Ohm·m] |
Weldability : | |
without limitations | - welding is done without heating and subsequent heat treeting |
limited weldability | - welding is possible under heating up to 100-120 grade and subsequent heat treeting |
hard weldability | - obtaining the quality welding needs the additional operations:heating up to 200-300 grade; the heat treeting ia annealing |
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