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	BS	DIN
40Cr13	X39Cr13	1.4031

ULTRASONIC STANDARD:
GB/T6402-2008 / SEP921-84.  ASTM A388

CHEMICAL COMPOSITION:

C	Si	Mn	P≤	S≤	Cr	Ni
0.36/0.45	≤0.60	≤0.80	0.035	0.03	12.00/14.00	(0.60)

HEAT TREATMENT SPECIFICATION & MECHANICAL PROPERTIES:
Annealed hardness ≤201HB,impression diameter 3.9～4.3mm; Q&T,≥50HV 
Annealing 800～900℃ slowly cooling , about 750℃ rapid cooling.
Quenching :1050～1100℃ oil cooling. 
Tempering : 200～300℃ 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:
Its hardness higher than 3Cr13 after Q&T, good corrosion resistance . Used make cutter , nozzle, valve seat 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.