PRODUCT NAME :
stainless steel
STANDARD:
GB/T1220-2007 GB/T1221-2007 GB/T20878-2007 ASTM A959-04 ISO4955:2005 ISO683-13 ISO683-16 EN10088:1-1995 EN10095-1999
GRADE COMPARISION:
|
GB |
ASTM |
BS |
JIS |
DIN |
|
20Cr13 |
420 |
X20Cr13 |
SUS420J1 |
1.4021 |
ULTRASONIC STANDARD:
GB/T6402-2008 / SEP921-84. ASTM A388
CHEMICAL COMPOSITION:
|
C |
Si |
Mn |
P≤ |
S≤ |
Cr |
|
0.16/0.25 |
≤1.00 |
≤1.00 |
0.035 |
0.03 |
12.00/14.00 |
HEAT TREATMENT SPECIFICATION & MECHANICAL PROPERTIES:
Tensile strength : σb (MPa)：≥635
Yeild strength σ0.2 (MPa)：≥440
Elongation δ5 (%)：,≥20
Reduction of area ψ (%)：≥50
Impact Akv (J)：≥63
Hardness ≤223HB;Q&T≥192HB
Annealing 800～900℃ rapid cooling .
Quenching 920～980℃ oil cooling.
Tempering 600～750℃ rapid cooling.
Metallographic structure :martensite
DELIVERY CONDITION :
DIMENSION : mm
|
ROUND STEEL BAR |
COIL ROD |
WIRE |
SQUARE/ FLAT |
|
FORGED BAR |
ROLLED BAR |
HOT ROLLED |
COLD DRAW |
FORGED |
ROLLED |
|
100-350 |
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 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.
