Normalizing Annealing Tool Steels Table Chart

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Normalizing Annealing Tool Steels Table Chart

Engineering Materials
Applications & Design

Normalizing and Annealing Temperatures of Tool Steels Table Chart. Annealing is the steady heating of a metal at a certain temperature above the recrystallization phase followed by a gradual cooling process. Normalizing heat treating will create a material that is softer but will not produce the uniform material properties of annealing.. A material can be normalized by heating it to a specific temperature and then letting the material cool to room temperature outside of the oven. This treatment refines the grain size and improves the uniformity of microstructure and properties of hot rolled steel.

Steel		Normalizing treatment temperature (a)		Annealing (b)
Steel		Normalizing treatment temperature (a)		Temperature		Rate of cooling max		Hardness
Type	°C		°F	°C	°F	°C /h	°F /h	HB
Molybdenum high-speed steels
M1, M10		Do not normalize		815-970	1500-1600	22	40	207-235
M2		Do not normalize		870-900	1600-1650	22	40	212-241
M3, M4		Do not normalize		870-900	1600-1650	22	40	223-255
M6		Do not normalize		870	1600	22	40	248-277
M7		Do not normalize		815-870	1500-1600	22	40	217-255
M30, M33, M34, M36, M41, M42, M46, M47		Do not normalize		870-900	1600-1650	22	40	235-269
M43		Do not normalize		870-900	1600-1650	22	40	248-269
M44		Do not normalize		870-900	1600-1650	22	40	248-293
Tungsten hot work steels
T1		Do not normalize		870-900	1600-1650	22	40	217-255
T2		Do not normalize		870-900	1600-1650	22	40	223-255
T4		Do not normalize		870-900	1600-1650	22	40	229-269
T5		Do not normalize		870-900	1600-1650	22	40	235-277
T6		Do not normalize		870-900	1600-1650	22	40	248-293
T8		Do not normalize		870-900	1600-1650	22	40	229-255
T15		Do not normalize		870-900	1600-1650	22	40	241-277
Chromium hot work steels
H10, H11, H12, H13		Do not normalize		845-900	1550-1650	22	40	192-229
H14		Do not normalize		870-900	1600-1650	22	40	207-235
H19		Do not normalize		870-900	1600-1650	22	40	207-241
Tungsten hot work steels
H21, H22, H25		Do not normalize		870-900	1600-1650	22	40	207-235
H23		Do not normalize		870-900	1600-1650	22	40	212-255
H24, H26		Do not normalize		870-900	1600-1650	22	40	217-241
Molybdenum hot work steels
H41, H43		Do not normalize		815-870	1500-1600	22	40	207-235
H42		Do not normalize		845-900	1550-1650	22	40	207-235
High-carbon high chromium cold work steels
D2, D3, D4		Do not normalize		870-900	1600-1650	22	40	217-255
D5		Do not normalize		870-900	1600-1650	22	40	223-255
D7		Do not normalize		870-900	1600-1650	22	40	235-262
Medium-alloy air-hardening cold work steels
A2		Do not normalize		845-870	1550-1600	22	40	201-229
A3		Do not normalize		845-870	1550-1600	22	40	207-229
A4		Do not normalize		740-760	1360-1400	14	25	200-241
A6		Do not normalize		730-745	1350-1375	14	25	217-248
A7		Do not normalize		870-900	1600-1650	14	25	235-262
A8		Do not normalize		845-870	1550-1600	22	40	192-223
A9		Do not normalize		845-870	1550-1600	14	25	212-248
A10	790		1450	765-795	1410-1460	8	15	235-269
Oil-hardening cold work steels
O1	870		1600	760-790	1400-1450	22	40	183-212
O2	845		1550	745-775	1375-1425	22	40	183-212
O6	870		1600	765-790	1410-1450	11	20	183-217
O7	900		1650	790-815	1450-1500	22	40	192-217
Shock-resisting steels
S1		Do not normalize		790-815	1450-1500	22	40	183-229(c)
S2		Do not normalize		760-790	1400-1450	22	40	192-217
S5		Do not normalize		775-800	1425-1475	14	25	192-229
S7		Do not normalize		815-845	1500-1550	14	25	187-223
Mold steels
P2		Not required		730	1350-1500	22	40	103-123
P3		Not required		815	1350-1500	22	40	109-137
P4		Do not normalize		870-900	1600-1650	14	25	116-128
P5		Not required		845-870	1550-1600	22	40	105-116
P6		Not required		845	1550	8	15	183-217
P20	900		1650	760-790	1400-1450	22	40	149-179
P21	900		1650	Do not anneal
Low-alloy special-purpose steels
L2	870-900		16001650	760-790	1400-1450	22	40	163-197
L3	900		1650	790-815	1450-1500	22	40	174-201
L6	870		1600	760-790	1400-1450	22	40	183-212
Carbon-tungsten special-purpose steels
F1	900		1650	760-800	1400-1475	22	40	183-207
F2	900		1650	790-815	1450-1500	22	40	207-235
Water-hardening steels
W1, W2	790-925(d)		1450-1700(d)	740-790(e)	1360-1450(e)	22	40	156-201
W5	870-925		16001700	760-790	1400-1450	22	40	163-201

(a) Time held at temperature varies from 15 min for small sections to 1 h for large sizes. Cooling is done in still air. Normalizing should not be confused with low-temperature annealing.

(b) The upper limit of ranges should be used for large sections and the lower limit for smaller sections. Time held at temperature varies from 1 h for light sections to 4 h for heavy sections and large furnace charges of high alloy steel.

(d) Temperature varies with carbon content: 0.60 to 0.75ºC, 815ºC (1500°F); 0.75 to 0.90 ºC, 790ºC (1450ºF); 0.90 to 1.10ºC, 870ºC (1600ºF); 1.10 to 1.40 ºC, 870 to 925ºF (1600 to 1700ºF).

(e) Temperature varies with carbon content: 0.60 to 0.90 ºC, 740 to 790ºC (1360 to 1450ºF); 0.90 to 1.40 ºC, 760 to 790ºC (1400 to 1450ºF).

Source: ASM Handbook Vol. 4, page 715, table 2.