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 |
|
07Cr17Ni7Al |
631 |
X7CrNiAl17-7 |
SUS631 |
1.4568 |
ULTRASONIC STANDARD:
GB/T6402-2008 / SEP921-84. ASTM A388
CHEMICAL COMPOSITION:
|
C |
Si |
Mn |
P≤ |
S≤ |
Cr |
Ni |
Al |
|
0.09 |
1.00 |
1.00 |
0.040 |
0.030 |
16.00/18.00 |
6.50/7.75 |
0.75/1.50 |
HEAT TREATMENT SPECIFICATION & MECHANICAL PROPERTIES:
Tensile strength : Solid solutionσb (MPa)：≥1030 aging 565℃ ≥1140; 510℃ ≥1230
Yeild strength σ0.2 (MPa)：≥685
Elongation δ5 (%)：,≥20
Reduction of area ψ (%)：≥25
Impact Akv (J)：≥
Hardness ≤229HB,565℃ aging ,≥363HB;510℃ aging ,≥388HB
Annealing 800～900℃ rapid cooling .
Quenching 1010～1040℃ oil cooling.
Tempering 120-160℃ rapid cooling
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:
Semiaustenitic precipitation hardening stainless steel .its a austenite unstable steel. The steel is austenite structure in solid solution
and indoor temperature condition. Through cold machining ,cold treatment or heat 750℃ , austenite can tranform to martensite, again
doing solid solution .
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.
