RODUCT NAME :
alloy structure steel
STANDARD:
GB/T3077-1999 EN10083-1 EN10083-3 ISO 683-1
GRADE COMPARISION:
|
GB |
ГОСТ |
ASTM |
BS |
JIS |
DIN |
|
20Mn2 |
20Г2 |
1320,1321 |
150M19 |
SMn420 |
20Mn5 |
ULTRASONIC STANDARD:
GB/T6402-2008 / SEP921-84. ASTM A388
CHEMICAL COMPOSITION:
|
C |
Si |
Mn |
P≤ |
S≤ |
Cr |
|
0.16/0.22 |
0.15/0.40 |
1.20/1.60 |
0.035 |
0.035 |
≤0.29 |
HEAT TREATMENT SPECIFICATION & MECHANICAL PROPERTIES:
Have moderate strength , while cold deformation plasticity higher . Used in gear ,small shaft , piston pin , cross melt etc in automobile and tractor .
Tensile strength ≥785MPa
Yeild strenght ≥590MPa
Enlongation ≥10%
Reduction of area ≥40%
Impact ≥47Aku2/J
Hardness ≤187HB
Temperature temperature :℃ 220 , coolant : water , air . Quenching temperature 850.
DELIVERY CONDITION :
DIMENSION : mm
|
ROUND STEEL BAR |
COIL ROD |
WIRE |
SQUARE/ FLAT |
|
FORGED BAR |
ROLLED BAR |
HOT ROLLED |
COLD DRAW |
FORGED |
ROLLED |
|
80-650 |
16-250 |
∮5.5-20 |
∮0.2-13 |
120-800×120-800 |
5-38×44-150 10-90×60-305 |
APPLIED RANGE:
REMARK：
Above listed parameters and sepcification only for reference . Specific parameters according to standard. Requirments
beyond standard will be negotiated 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 as per international,
Chinese or industry standards, or
based on agreements with customers.
