DIN 1.2379

High-alloy tool steel with excellent wear resistance

DIN 1.2379 is a high-alloy tool steel with a high carbon and chromium content. It is one of the most widely used steels for cutting and forming tools due to its high hardness, very good wear resistance and good dimensional stability during hardening. Compared to the similar steel 1.2080, it has higher toughness due to the molybdenum and vanadium content.

Alternative designation: X155CrVMo12, ČSN 19573

Type: Alloy tool steel

Heat treatment:

Preheating: 600–850 °C (multi-stage)
Quenching: 1020–1040 °C (air or oil)
Tempering: 150–500 °C depending on the required hardness and application

Round bars, rolled, peeled, forged, annealed

10	15	20	25	31	36	41	51	61	71
81	91	102	112	122	131	132	142	152	161
172	182	190	202	212	220	232	240	252	260
282	302	322	341	362	380

Flat bars, rolled, forged, annealed

	600
10	X
16	X
21	X
26	X
31	X
36	X
41	X
46	X
51	X
56	X
61	X
66	X
71	X
75	X
81	X
91	X
101	X
111	X
120	X

Forged, annealed blocks

	305	405	505	605	705	805
305	X	X	X	X	X	X
	400	500	600	700	800
400	X	X	X	X	X

Features:

High hardness after hardening (up to 62 HRC)
Excellent wear resistance
Good dimensional stability during heat treatment
Higher toughness than 1.2080
Harder to machine in the hard state, but easy to grind

Use:

High-stress cutting and forming tools
Knives, punches, extruders
Cold forming tools where wear resistance is important

10	15	20	25	31	36	41	51	61	71
81	91	102	112	122	131	132	142	152	161
172	182	190	202	212	220	232	240	252	260
282	302	322	341	362	380

	600
10	X
16	X
21	X
26	X
31	X
36	X
41	X
46	X
51	X
56	X
61	X
66	X
71	X
75	X
81	X
91	X
101	X
111	X
120	X

10	15	20	25	31	36	41	51	61	71
81	91	102	112	122	131	132	142	152	161
172	182	190	202	212	220	232	240	252	260
282	302	322	341	362	380

	600
10	X
16	X
21	X
26	X
31	X
36	X
41	X
46	X
51	X
56	X
61	X
66	X
71	X
75	X
81	X
91	X
101	X
111	X
120	X

DIN 1.2379

High-alloy tool steel with excellent wear resistance

Round bars, rolled, peeled, forged, annealed

Flat bars, rolled, forged, annealed

Forged, annealed blocks

Non-binding inquiry

10	15	20	25	31	36	41	51	61	71
81	91	102	112	122	131	132	142	152	161
172	182	190	202	212	220	232	240	252	260
282	302	322	341	362	380

	600
10	X
16	X
21	X
26	X
31	X
36	X
41	X
46	X
51	X
56	X
61	X
66	X
71	X
75	X
81	X
91	X
101	X
111	X
120	X