Chapter 11      Tool Steels

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NORMALIZING AND ANNEALING TEMPERATURES FOR TOOL STEELS

 

 

 

Annealingb
  Normalizinga Temperature Rate of Cooling max Hardness
 AISI F C F C F/hr C/hr HB
 M1, M10 Do not normalize 1500-1600 815-870 40 22 207-235
 M2 Do not normalize 1600-1650 870-900 40 22 212-241
 M3, M4 Do not normalize 1600-1650 870-900 40 22 223-255
 M7 Do not normalize 1500-1600 815-870 40 22 217-255
 M30, M33 Do not normalize 1600-1650 870-900 40 22 235-269
 M34, M35 Do not normalize 1600-1650 870-900 40 22 235-269
 M36, M41 Do not normalize 1600-1650 870-900 40 22 235-269
 M42, M46 Do not normalize 1600-1650 870-900 40 22 235-269
 M47 Do not normalize 1600-1650 870-900 40 22 238-269
 M43 Do not normalize 1600-1650 870-900 40 22 248-269
 M44 Do not normalize 1600-1650 870-900 40 22 248-293
 M48 Do not normalize 1600-1650 870-900 40 22 285-311
 M62 Do not normalize 1600-1650 870-900 40 22 262-285
 T1 Do not normalize 1600-1650 870-900 40 22 217-255
 T2 Do not normalize 1600-1650 870-900 40 22 223-255
 T4 Do not normalize 1600-1650 870-900 40 22 229-269
 T5 Do not normalize 1600-1650 870-900 40 22 235-277
 T6 Do not normalize 1600-1650 870-900 40 22 248-293
 T8 Do not normalize 1600-1650 870-900 40 22 229-255
 T15 Do not normalize 1600-1650 870-900 40 22 241-277
 M50 Do not normalize 1525-1550 830-845 40 22 197-235
 M52 Do not normalize 1525-1550 830-845 40 22 197-235
 H10, H11 Do not normalize 1550-1650 845-900 40 22 192-229
 H12, H13 Do not normalize 1550-1650 845-900 40 22 192-229
 H14 Do not normalize 1600-1650 870-900 40 22 207-235
      Annealingb207-241
  Normalizinga Temperature207-235 Rate of Cooling max Hardness
 AISI F C F207-235 C F/hr C/hr HB
 H19 Do not normalize 1600-1650 870-900 40 22 207-241
 H21, H22 Do not normalize 1600-1650 870-900 40 22 207-235
 H25 Do not normalize 1600-1650 870-900 40 22 207-235
 H23 Do not normalize 1600-1650 870-900 40 22 212-255
 H24, H26 Do not normalize 1600-1650 870-900 40 22 217-241
 H41, H43 Do not normalize 1500-1600 815-870 40 22 207-235
 H42 Do not normalize 1550-1650 845-900 40 22 207-235
 D2, D3 Do not normalize 1600-1650 870-900 40 22 217-235
 D4 Do not normalize 1600-1650 870-900 40 22 217-255
 D5 Do not normalize 1600-1650 870-900 40 22 223-255
 D7 Do not normalize 1600-1650 870-900 40 22 235-262
 A4 Do not normalize 1360-1400 740-760 25 14 200-241
 A6 Do not normalize 1350-1375 730-745 25 14 217-248
 A7 Do not normalize 1600-1650 870-900 25 14 235-262
 A8 Do not normalize 1550-1600 845-870 40 22 192-223
 A9 Do not normalize 1550-1600 845-870 25 14 212-248
 A10 1450 790 1410-1450 765-795 15 8 235-269
 O1 1600 870 1400-1450 760-790 40 22 183-212
 O2 1550 845 1350-1425 745-775 40 22 183-212
 O6 1600 870 1410-1450 765-790 20 11 183-217
 O7 1650 900 1450-1500 790-815 40 22 192-217
      Annealingb
  Normalizinga Temperature Rate of Cooling max Hardness
 AISI F C F C F/hr C/hr HB
 S1 Do not normalize 1450-1500 790-815 40 22 183-229c
 S2 Do not normalize 1400-1475 760-790 40 22 192-217
 S5 Do not normalize 1425-1475 775-800 25 14 192-229
 S7 Do not normalize 1500-1550 815-845 25 14 187-223
 P2 Not required 1350-1500 730-815 40 22 103-123
 P3 Not required 1350-1500 730-815 40 22 109-137
 P4 Do not normalize 1600-1650 870-900 25 14 116-128
 P5 Not required 1550-1600 845-870 40 22 105-116
 P6 Not required 1550 845 15 8 183-217
 P20 1650 900 1400-1450 760-790 40 22 149-179
 P21 1650 900 Do not anneal
 L2 1600-1650 871-900 1400-1450 760-790 40 22 163-197
 L3 1650 900 1450-1500 790-815 40 22 174-201
 L6 1600 870 1400-1450 760-790 40 22 183-212
 F1 1650 900 1400-1475 760-800 40 22 183-207
 F2 1650 900 1450-1500 790-815 40 22 207-235
 W1, W2 1450-1700 790-925d 1360-1450e 740-790e 40 22 156-201
 W5 1600-1700 870-925 1400-1450 760-790 40 22 163-201
 a. Time held at temperature varies from 15 min for samll sections to 1 hour 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 hour for light sections to 4 hours for heavy sections and large furnace charges of high-alloy steel.
 c. For 0.25 Si type 183 to 207 HB: for 1.00 Si type, 207 to 229 HB.
 d. Temperatre varies with carbon content: 0.60 to 0.75 C - 1500 F (815 C); 0.75 to 0.90 C - 1450 F (790 C); 0.90 to 1.10 C - 1600 F
 (870 C); 1.10 to 1.40 C - 1600-1700 F (870-925).
 e. Temperature varies with carbon content: 0.60 to 0.90 C - 1300-1450 F (740-790); 0.90 to 1.40 C - 1400-1450 F (760-790 C).
 
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 The Ferrous Metals Data Book

>  (870 C); 1.10 to 1.40 C - 1600-1700 F (870-925).  e. Temperature varies with carbon content: 0.60 to 0.90 C - 1300-1450 F (740-790); 0.90 to 1.40 C - 1400-1450 F (760-790 C).    [ Go to Top ]

                       

 The Ferrous Metals Data Book