PRODUCT NAME :
spring steel round bar / rod / wire
STANDARD:
GB/T1222-2007 ISO 683-14
GRADE COMPARISION:
|
GB |
ГОСТ |
ASTM |
BS |
JIS |
NF |
DIN |
|
50CrVA |
50XΦA |
6150 |
735A50 |
SUP10 |
50CV4 |
50CrV4 |
ULTRASONIC STANDARD:
GB/T6402-2008 / SEP921-84. ASTM A388
CHEMICAL COMPOSITION:
|
C |
Si |
Mn |
P≤ |
S≤ |
|
2.00/2.30 |
≤0.40 |
≤0.40 |
0.03 |
0.03 |
|
0.47/0.54 |
0.17/0.37 |
0.50/0.80 |
0.025 |
0.025 |
HEAT TREATMENT SPECIFICATION:
Hot rolled coil rod annealed or not .cold drawn wire annealed.
Quenching :850℃±20℃,oil cooling , tempering 500℃±50℃
MECHANICAL PROPERTIES:
Tensile strength:σb (MPa)：≥1274(130)
Yield strength:σs (MPa)：≥1127(115)
Elongation:δ5 (%)：≥10
Reduction of area :ψ (%)：≥40
Hardness :≤321HB
DELIVERY CONDITION :
annealed
DIMENSION : mm
|
ROUND STEEL BAR |
COIL ROD |
WIRE |
SQUARE/ FLAT |
|
FORGED BAR |
ROLLED BAR |
HOT ROLLED |
COLD DRAW |
FORGED |
ROLLED |
|
100-700 |
16-250 |
∮5.5-20 |
∮0.2-13 |
120-800×120-800 |
5-38×44-150 10-90×60-305 |
APPLIED RANGE:
widely used in the manufacture of railway locomotives, automobiles, construction machinery, etc.
REMARK：
Above listed parameters and sepcification only for reference . Specific parameters according to standard. Requirments
beyond standard will be negotiate by both sides .
Delivery state:annealed, spheroidal annealed, quenched & tempered ,bright bar, cold-drawn, etc.
Listed specifications are only typical grades; products of required specifications can be developed/produced per international,
Chinese or industry standards, or based on agreements with customers.
