PRODUCT NAME :
alloy structure steel
STANDARD:
GB/T3077-1999 EN10083-1 EN10083-3 ISO 683-1
GRADE COMPARISION:
|
GB |
ASTM |
BS |
JIS |
DIN |
|
12CrNi3 |
|
655M13 |
SNC815 |
15NiCr13 |
ULTRASONIC STANDARD:
GB/T6402-2008 / SEP921-84. ASTM A388
CHEMICAL COMPOSITION:
|
C |
Si |
Mn |
P≤ |
S≤ |
Cr |
Ni |
|
0.10/0.17 |
0.17/0.37 |
0.30/0.60 |
0.035 |
0.035 |
0.60/0.90 |
2.75/3.15 |
HEAT TREATMENT SPECIFICATION & MECHANICAL PROPERTIES:
DELIVERY CONDITION :
Quenching temperature （℃）：860
Tensile strength σb (MPa)：≥930(95)
Yeild strength σs (MPa)：≥685(70)7
elongation δ5 (%)：≥11
Reduction area ψ (%)：≥50
Impact Akv (J)：≥ 71
Hardness ：≤217
normalized ,annealed, black surface ,rough machined or quenched & tempered , should be indicated in contract .
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 |
length : forged bar free length 4-5.8M,rolled bar 5.8M. for customers special requirment, the bar length can do 20 meters long.
APPLIED RANGE:
widely used advanced carburizing steel . Strength , plasticity, hardenability higher. Main used for make pricipal axle which require high
strength high hardness high toughness in heavy load condition. And shaft ,stick , all kinds of transmission gear , adjusting screw, camshaft.
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.
