Steel 6KHS (ЭИ325)

Designation

Steel 6KHS used: for the production of pneumatic chisels and stamps of small size for cold forming; chipper knives.

Name	Code	Standards
Bars and shapes	В22	GOST 1133-71, GOST 2590-2006, GOST 2591-2006
Sheets and strips	В33	GOST 4405-75, TU 14-131-971-2001
Bars and shapes	В32	GOST 5210-95, GOST 5950-2000, GOST 7417-75, GOST 8559-75, GOST 8560-78, GOST 14955-77, TU 14-11-245-88
Blanks. Of the workpiece. Slabs	В31	OST 24.952.01-89

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Cu	V	Ti	Mo	W
GOST 5950-2000	0.6-0.7	≤0.03	≤0.03	0.15-0.45	1-1.3	0.6-1	≤0.4	Rest	≤0.3	≤0.15	≤0.03	≤0.2	≤0.2

Fe is the basis.

Section, mm	t отпуска, °C	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	y, %	KCU, kJ/m²	HB, MPa	HRC
Rolled steel. Quenching in oil at 880 °C + Vacation at 500 °C (exposure 2 hours)
	-	≥1250	≥1400	≥8	≥30	≥390	-	-
Rolled steel. Quenching in oil at 880 °C to + Leave (the shutter speed when the vacation 2 h)
-	200	≥2060	-	≥2	-	-	-	≥59
Rolled steel. Quenching in oil at 880 °C to + Vacation at 600-620 °C
-	-	-	≥760	≥11	≥45	-	≥249	-
Rolled steel. Quenching in oil at 880 °C to + Leave (the shutter speed when the vacation 2 h)
-	300	≥1910	≥2080	≥3	≥20	≥24	-	≥56
Rolled steel. Quenching in oil at 880 °C to + Vacation at 600-620 °C
-	-	-	≥800	≥13	≥46	-	≥240	-
Rolled steel. Quenching in oil at 880 °C to + Leave (the shutter speed when the vacation 2 h)
-	400	≥1760	≥1910	≥4	≥25	≥20	-	≥52
Rolled steel. Quenching in oil at 880 °C to + Vacation at 600-620 °C
-	-	-	≥800	≥13	≥46	-	≥230	-
Rolled steel. Quenching in oil at 880 °C to + Leave (the shutter speed when the vacation 2 h)
-	500	≥1250	≥1400	≥8	≥30	≥39	-	≥45
Rolled steel. Quenching in oil at 880 °C to + Vacation at 600-620 °C
-	-	-	≥660	≥16	≥47	-	≥190	-
Rolled steel. Quenching in oil at 880 °C to + Leave (the shutter speed when the vacation 2 h)
-	600	≥980	≥1070	≥20	-	≥46	-	-
Rolled steel. Quenching in oil at 880 °C to + Vacation at 600-620 °C
-	-	-	≥500	≥18	≥48	-	≥150	-
-	-	-	≥330	≥19	≥62	-	≥130	-
-	-	-	≥225	≥22	≥71	-	≥100	-

Name	Description
s_T\|s_0,2	Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σ_U	Limit short-term strength
d₅	Elongation after rupture
y	The relative narrowing
KCU	Toughness
HB	Brinell hardness number
HRC	Rockwell hardness (indenter diamond spheroconical)

Name	The value
The temperature of forging	Beginning - 1170 °C, the end - 850 °C. the Cooling in a lined pit or under a layer of sand.