Product Name: 

Cold-work die steel flat bar in stock 1.2767

 

Chemical Composition (%):

C	Si	Mn	P≤	S≤	Cr	Ni	Mo	W
0.40-0.50	0.10-0.40	0.15-0.45	0.030	0.030	1.20-1.50	3.80-4.30	0.15-0.35	0.40-0.60

 

Specialty     

High penetration, high rigidity, high endurance, small distortion when quench, possess high rigidity of Cr12*210CrW12,.good tenacity, adapt to tool mould of complicated form.

 

 

Use

All kinds of cold stamping mold, cut blade and twisting thread board of high endurance and long life

Heat Treatment     

 

1. Quench: recommend oil of 980-1040°c\wind(re-preheat~500 °c -850 °c )HRC64-62

2.  tempering: eliminate stress, stabilize framework, (180-200 °c )≥2 hours HRC63-62

3.Change of temperature of tempering and HRC rigidity (reference)

4.Annealing: 780-800 °c slow cooling

 

Melting Process 

1.EAF: Electric Furnace+LF+VD(Optional)

2. ESR:  Electric Furnace+LF+VD+Eleroslag Remelted(Optional)

 

Metal products 20 mm(and over) in diameter or thickness shall be US-tested in accordance with SEP1921 as follows:

Non-metallic inclusions according to ASTM E45, Method A.
Inclusion  series	Inclusion  series fgfdgfdffgfgfgfgf
	A	B	C	D
Thin	2	2	2	2
Heavy	1.5	1.5	1.5	1.5

 

UT Class

According to Standard of SEP 1921/84,100% Volume, Level C/c, D/d or E/e

 

Tolerance on Quantity

+/-10% Per Size