Tool Steel

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1.2714 55NiCrMoV7 L6 Steel Material Round Bar Sheet Plate

AISI D2 Steel Round Bar Sheet Plate, DIN 1.2379, JIS SKD11

AISI D3 Steel Round Bar Sheet Plate, JIS SKD1, DIN 1.2080

AISI D6 Steel Round Bar Sheet Plate, JIS SKD2, DIN 1.2436

AISI H11 Steel Round Bar Sheet Plate, DIN 1.2343, JIS SKD6

AISI H13 Steel Round Bar Sheet Plate, DIN 1.2344, JIS SKD61

AISI O1 Steel Round Bar Sheet Plate, DIN 1.2510, JIS SKS3

AISI O2 Steel Round Bar Sheet Plate, DIN 1.2842, JIS SKS31

DC53 Steel Round Bar Sheet Plate Material

DIN 1.2363 Steel Round Bar Sheet Plate, AISI A2, JIS SKD12

Tool steels are a family carbon and alloy steels having distinct characteristics such as hardness, wear resistance, toughness, and resistance to softening at elevated temperatures.

Tool steels comprise carbide-forming elements such as chromium, vanadium, molybdenum and tungsten in different combinations. They also contain cobalt or nickel which improves their high-temperature performance. They are generally heat-treated to improve the hardness and used for stamping, forming, shearing and cutting metals and forming of plastics. They are classified according to their composition and properties into various categories.

Classifications

Tools steels fall into three basic categories:

Cold work tool steels
Hot work tool steels
High-speed tool steels

Cold-work steels are further subdivided into:

Air-hardening
Medium-alloy cold-work steels
High-carbon, high-chromium cold-work steels
Oil-hardening cold-work steels

Hot work steels are subdivided into:

Chromium
Tungsten
Molybdenum hot work steels

High-speed tool steels are divided into:

Molybdenum
Tungsten
Intermediate high-speed steels

Other types of tool steels include:

Water-hardening tool steels
Shock-resistant tool steels
Low-carbon tool steels
Low-alloy special purpose tool steels.

The following table shows the composition limits of various types of tool steels.

Designation		Compositiona, %
AISI	UNS	C	Mn	Si	Cr	Ni	Mo	W	V	Co
Molybdenum high-speed steels
M1	T11301	0.78-0.88	0.15-0.40	0.20-0.50	3.50-4.00	0.30 max	8.20-9.20	1.40-2.10	1.00-1.35	–
M2	T11302	0.78-0.88; 0.95-1.05	0.15-0.40	0.20-0.45	3.75-4.50	0.30 max	4.50-5.50	5.50-6.75	1.75-2.20	–
M3, class 1	T11313	1.00-1.10	0.15-0.40	0.20-0.45	3.75-4.50	0.30 max	4.75-6.50	5.00-6.75	2.25-2.75	–
M3, class 2	T11323	1.15-1.25	0.15-0.40	0.20-0.45	3.75-4.50	0.30 max	4.75-6.50	5.00-6.75	2.75-3.75	–
M4	T11304	1.25-1.40	0.15-0.40	0.20-0.45	3.75-4.75	0.30 max	4.25-5.50	5.25-6.50	3.75-4.50	–
M7	T11307	0.97-1.05	0.15-0.40	0.20-0.55	3.50-4.00	0.30 max	8.20-9.20	1.40-2.10	1.75-2.25	–
M10	T11310	0.84-0.94; 0.95-1.05	0.10-0.40	0.20-0.45	3.75-4.50	0.30 max	7.75-8.50	–	1.80-2.20	–
M30	T11330	0.75-0.85	0.15-0.40	0.20-0.45	3.50-4.25	0.30 max	7.75-9.00	1.30-2.30	1.00-1.40	4.50-5.50
M33	T11333	0.85-0.92	0.15-0.40	0.15-0.50	3.50-4.00	0.30 max	9.00-10.00	1.30-2.10	1.00-1.35	7.75-8.75
M34	T11334	0.85-0.92	0.15-0.40	0.20-0.45	3.50-4.00	0.30 max	7.75-9.20	1.40-2.10	1.90-2.30	7.75-8.75
M35	T11335	0.82-0.88	0.15-0.40	0.20-0.45	3.75-4.50	0.30 max	4.50-5.50	5.50-6.75	1.75-2.20	4.50-5.50
M36	T11336	0.80-0.90	0.15-0.40	0.20-0.45	3.75-4.50	0.30 max	4.58-5.50	5.50-6.50	1.75-2.25	7.75-8.75
M41	T11341	1.05-1.15	0.20-0.60	0.15-0.50	3.75-4.50	0.30 max	3.25-4.25	6.25-7.00	1.75-2.25	4.75-5.75
M42	T11342	1.05-1.15	0.15-0.40	0.15-0.65	3.50-4.25	0.30 max	9.00-10.00	1.15-1.85	0.95-1.35	7.75-8.75
M43	T11343	1.15-1.25	0.20-0.40	0.15-0.65	3.50-4.25	0.30 max	7.50-8.50	2.25-3.00	1.50-1.75	7.75-8.75
M44	T11344	1.10-1.20	0.20-0.40	0.30-0.55	4.00-4.75	0.30 max	6.00-7.00	5.00-5.75	1.85-2.20	11.00-12.25
M46	T11346	1.22-1.30	0.20-0.40	0.40-0.65	3.70-4.20	0.30 max	8.00-8.50	1.90-2.20	3.00-3.30	7.80-8.80
M47	T11347	1.05-1.15	0.15-0.40	0.20-0.45	3.50-4.00	0.30 max	9.25-10.00	1.30-1.80	1.15-1.35	4.75-5.25
M47	T11348	1.42-1.52	0.15-0.40	0.15-0.40	3.50-4.00	0.30 max	4.75-5.50	9.50-10.50	2.75-3.25	8.00-10.00
M62	T11362	1.25-1.35	0.15-0.40	0.15-0.40	3.50-4.00	0.30 max	10.00-11.00	5.75-6.50	1.80-2.10	–
Tungsten high-speed steels
T1	T12001	0.65-0.80	0.10-0.40	0.20-0.40	3.75-4.50	0.30 max	–	17.25-18.75	0.90-1.30	–
T2	T12002	0.80-0.90	0.20-0.40	0.20-0.40	3.75-4.50	0.30 max	1.0 max	17.50-19.00	1.80-2.40	–
T4	T12004	0.70-0.80	0.10-0.40	0.20-0.40	3.75-4.50	0.30 max	0.40-1.00	17.50- 19.00	0.80-1.20	4.25-5.75
T5	T12005	0.75-0.85	0.20-0.40	0.20-0.40	3.75-5.00	0.30 max	0.50-1.25	17.50-19.00	1.80- 2.40	7.00-9.50
T6	T12006	0.75-0.85	0.20-0.40	0.20-0.40	4.00-4.75	0.30 max	0.40-1.00	18.50-21.00	1.50- 2.10	11.00-13.00
T8	T12008	0.75-0.85	0.20-0.40	0.20-0.40	3.75-4.50	0.30 max	0.40-1.00	13.25-14.75	1.80- 2.40	4.25-5.75
T15	T12015	1.50-1.60	0.15-0.40	0.15-0.40	3.75-5.00	0.30 max	1.00 max	11.75- 13.00	4.50-5.25	4.75-5.25
Intermediate high-speed steels
M50	T11350	0.78-0.88	0.15-0.45	0.20-0.60	3.75-4.50	0.30 max	3.90-4.75	–	0.80- 1.25	–
M52	T11352	0.85-0.95	0.15-0.45	0.20-0.60	3.50-4.30	0.30 max	4.00-4.90	0.75-1.50	1.65- 2.25	–
Chromium hot-work steels
H10	T20810	0.35-0.45	0.25-0.70	0.80-1.20	3.00-3.75	0.30 max	2.00-3.00	–	0.25-0.75	–
H11	T20811	0.33-0.43	0.20-0.50	0.80-1.20	4.75-5.50	0.30 max	1.10-1.60	–	0.30- 0.60	–
H12	T20812	0.30-0.40	0.20-0.50	0.80-1.20	4.75-5.50	0.30 max	1.25-1.75	1.00- 1.70	0.50 max	–
H13	T20813	0.32-0.45	0.20-0.50	0.80-1.20	4.75-5.50	0.30 max	1.10-1.75	–	0.80- 1.20	–
H14	T20814	0.35-0.45	0.20-0.50	0.80-1.20	4.75-5.50	0.30 max	–	4.00- 5.25	–	–
H19	T20819	0.32-0.45	0.20-0.50	0.20-0.50	4.00-4.75	0.30 max	0.30-0.55	3.75- 4.50	1.75-2.20	4.00-4.50
Tungsten hot-work steels
H21	T20821	0.28-0.36	0.15-0.40	0.15-0.50	3.00-3.75	0.30 max	–	8.50- 10.00	0.30-0.60	–
H22	T20822	0.30-0.40	0.15-0.40	0.15-0.40	1.75-3.75	0.30 max	–	10.00-11.75	0.25- 0.50	–
H23	T20823	0.25-0.35	0.15-0.40	0.15-0.60	11.00-12.75	0.30 max	–	11.00-12.75	0.75- 1.25	–
H24	T20824	0.42-0.53	0.15-0.40	0.15-0.40	2.50-3.50	0.30 max	–	14.00-16.00	0.40- 0.60	–
H25	T20825	0.22-0.32	0.15-0.40	0.15-0.40	3.75-4.50	0.30 max	–	14.00-16.00	0.40- 0.60	–
H26	T20826	0.45-0.55b	0.15-0.40	0.15-0.40	3.75-4.50	0.30 max	–	17.25- 19.00	0.75-1.25	–
Molybdenum hot-work steels
H42	T20842	0.55-0.70b	0.15-0.40	–	3.75-4.50	0.30 max	4.50- 5.50	5.50-6.75	1.75-2.20	–
Air-hardening, medium-alloy, cold-work steels
A2	T30102	0.95-1.05	1.00 max	0.50 max	4.75-5.50	0.30 max	0.90-1.40	–	0.15-0.50	–
A3	T30103	1.20-1.30	0.40-0.60	0.50 max	4.75-5.50	0.30 max	0.90-1.40	–	0.80- 1.40	–
A4	T30104	0.95-1.05	1.80-2.20	0.50 max	0.90-2.20	0.30 max	0.90-1.40	–	–	–
A6	T30106	0.65-0.75	1.80-2.50	0.50 max	0.90-1.20	0.30 max	0.90-1.40	–	–	–
A7	T30107	2.00-2.85	0.80 max	0.50 max	5.00-5.75	0.30 max	0.90-1.40	0.50- 1.50	3.90-5.15	–
A8	T30108	0.50-0.60	0.50 max	0.75-1.10	4.75-5.50	0.30 max	1.15-1.65	1.00- 1.50	–	–
A9	T30109	0.45-0.55	0.50 max	0.95-1.15	4.75-5.50	1.25-1.75	1.30-1.80	–	0.80- 1.40	–
A10	T30110	1.25-1.50c	1.60-2.10	1.00-1.50	–	1.55-2.05	1.25-1.75	–	–	–
High-carbon, high-chromium, cold-work steels
D2	T30402	1.40-1.60	0.60 max	0.60 max	11.00-13.00	0.30 max	0.70-1.20	–	1.10 max	–
D3	T30403	2.00-2.35	0.60 max	0.60 max	11.00-13.50	0.30 max	–	1.00 max	1.00 max	–
D4	T30404	2.05-2.40	0.60 max	0.60 max	11.00-13.00	0.30 max	0.70-1.20	–	1.00 max	–
D5	T30405	1.40-1.60	0.60 max	0.60 max	11.00-13.00	0.30 max	0.70-1.20	–	1.00 max	2.50-3.50
D7	T30407	2.15-2.50	0.60 max	0.60 max	11.50-13.50	0.30 max	0.70-1.20	–	3.80-4.40	–
Oil-hardening cold-work steels
O1	T31501	0.85-1.00	1.00-1.40	0.50 max	0.40-0.60	0.30 max	–	0.40-0.60	0.30 max	–
O2	T31502	0.85-0.95	1.40-1.80	0.50 max	0.50 max	0.30 max	0.30 max	–	0.30 max	–
O6	T31506	1.25-1.55c	0.30-1.10	0.55-1.50	0.30 max	0.30 max	0.20-0.30	–	–	–
O7	T31507	1.10-1.30	1.00 max	0.60 max	0.35-0.85	0.30 max	0.30 max	1.00-2.00	0.40 max	–
Shock-resisting steels
S1	T41901	0.40-0.55	0.10-0.40	0.15-1.20	1.00-1.80	0.30 max	0.50 max	1.50-3.00	0.15-0.30	–
S2	T41902	0.40-0.55	0.30-0.50	0.90-1.20	–	0.30 max	0.30-0.60	–	0.50 max	–
S5	T41905	0.50-0.65	0.60-1.00	1.75-2.25	0.50 max	–	0.20-1.35	–	0.35 max	–
S6	T41906	0.40-0.50	1.20-1.50	2.00-2.50	1.20-1.50	–	0.30-0.50	–	0.20-0.40	–
S7	T41907	0.45-0.55	0.20-0.90	0.20-1.00	3.00-3.50	–	1.30-1.80	–	0.20-0.30d	–
Low-alloy special-purpose tool steels
L2	T61202	0.45-1.00b	0.10-0.90	0.50 max	0.70-1.20	–	0.25 max	–	0.10-0.30	–
L6	T61206	0.65-0.75	0.25-0.80	0.50 max	0.60-1.20	1.25-2.00	0.50 max	–	0.20-0.30d	–
Low-carbon mold steels
P2	T51602	0.10 max	0.10-0.40	0.10-0.40	0.75-1.25	0.10-0.50	0.15-0.40	–	–	–
P3	T51603	0.10 max	0.20-0.60	0.40 max	0.40-0.75	1.00-1.50	–	–	–	–
P4	T51604	0.12 max	0.20-0.60	0.10-0.40	4.00-5.25	–	0.40-1.00	–	–	–
P5	T51605	0.10 max	0.20-0.60	0.40 max	2.00-2.50	0.35 max	–	–	–	–
P6	T51606	0.05-0.15	0.35-0.70	0.10-0.40	1.25-1.75	3.25-3.75	–	–	–	–
P20	T51620	0.28-0.40	0.60-1.00	0.20-0.80	0.40-2.00	–	0.30-0.55	–	–	–
P21	T51621	0.18-0.22	0.20-0.40	0.20-0.40	0.50 max	3.90-4.25	–	–	0.15-0.25	1.05-1.25A1
Water-hardening tool steels
W1	T72301	0.70-1.50e	0.10-0.40	0.10-0.40	0.15 max	0.20 max	0.10 max	0.15 max	0.10 max	–
W2	T72302	0.85-1.50e	0.10-0.40	0.10-0.40	0.15 max	0.20 max	0.10 max	0.15 max	0.15-0.35	–
W3	T72305	1.05-1.15	0.10-0.40	0.10-0.40	0.40-0.60	0.20 max	0.10 max	0.15 max	0.10 max	–

aExcept group W, all steels contain 0.03 max S, 0.03 max P and 0.25 max Cu; group W contain 0.025 max S, 0.025 max P, and 0.20 max Cu. As mentioned, amount of sulfur may be increased from 0.06% to 0.15% to enhance the machinability of group A, M, T, H and D steels.
bPresent in various carbon ranges.
cPresence of free graphite in the microstructure.
dOptional.
eSpecified ranges of carbon are indicated using suffix numbers.

In the above table, a capital letter is used to identify each group of tool steels having similar properties and composition; within that group, each type of tool steel is assigned a code number.