Chapter 11     Tool Steels

 

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COMPOSITION OF TOOL STEELSe

 AISI

UNS

C

Mn

Cr

Ni

Mo

W

V

Co
 Molybdenum High-Speed Steels

 M1

T11301

0.78-0.88

0.15-0.40

3.50-4.00

0.30

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

3.75-4.50

0.30

4.50-5.50

5.50-6.75

1.75-2.20

---

 M3a

T11313

1.00-1.10

0.15-0.40

3.75-4.50

0.30

4.75-6.50

5.00-6.75

2.25-2.75

---
 M3b T11323 1.15-1.25 0.15-0.40 3.75-4.50 0.30 4.75-6.50 5.00-6.75 2.75-3.75 ---
 M4 T11304 1.25-1.40 0.15-0.40 3.75-4.75 0.30 4.25-5.50 5.25-6.50 3.75-4.50 ---
 M7 T11307 0.97-1.05 0.15-0.40 3.50-4.00 0.30 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

3.75-4.50

0.30

7.75-8.50

---

1.80-2.20

---

 M30

T11330

0.75-0.85

0.15-0.40

3.50-4.25

0.30

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 3.50-4.00 0.30 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 3.50-4.00 0.30 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 3.75-4.50 0.30 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 3.75-4.50 0.30 4.50-5.50 5.50-6.50 1.75-2.25 7.75-8.75
 M41 T11341 1.05-1.15 0.20-0.60 3.75-4.50 0.30 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 3.50-4.25 0.30 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 3.50-4.25 0.30 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 4.00-4.75 0.30 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 3.70-4.20 0.30 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 3.50-4.00 0.30 9.25-10.00 1.30-1.80 1.15-1.85 4.75-5.25
 M48 T11348 1.42-1.52 0.15-0.40 3.50-4.00 0.30 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 3.50-4.00 0.30 10.00-11.00 5.75-6.50 1.80-2.10 ---

 AISI

UNS

C

Mn

Cr

Ni

Mo

W

V

Co
 Tungsten High-Speed Steels
 T1 T12001 0.65-0.80 0.10-0.40 3.75-4.50 0.30 --- 17.25-18.75 0.90-1.30 ---
 T2 T12002 0.80-0.90 0.20-0.40 3.75-4.50 0.30 1.00 17.50-19.00 1.80-2.40 ---
 T4 T12004 0.70-0.80 0.10-0.40 3.75-4.50 0.30 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 3.75-4.50 0.30 0.5-1.25 17.50-19.00 1.80-2.40 7.00-9.50
 T6 T12006 0.75-0.85 0.20-0.40 4.00-4.75 0.30 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 3.75-4.50 0.30 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 3.75-5.00 0.30 1.00 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 3.75-4.50 0.30 3.90-4.75 --- 0.80-1.25 ---
 M52 T11352 0.85-0.95 0.15-0.45 3.50-4.30 0.30 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 3.00-3.75 0.30 2.00-3.00 --- 0.25-0.75 ---
 H11 T20811 0.35-0.43 0.20-0.50 4.75-5.50 0.30 1.10-1.60 --- 0.30-0.60 ---
 H12 T20812 0.30-0.40 0.20-0.50 4.75-5.50 0.30 1.25-1.75 1.00-1.70 0.50 ---
 H13 T20813 0.30-0.40 0.20-0.50 4.75-5.50 0.30 1.10-1.75 --- 0.80-1.20 ---
 H14 T20814 0.35-0.45 0.20-0.50 4.75-5.50 0.30 --- 4.00-5.25 --- ---
 H19 T20819 0.32-0.45 0.20-0.50 4.00-4.75 0.30 0.30-0.55 3.75-4.50 1.75-2.20 4.00-4.50
 Tungsten Hot-Work Steels
 H21 T20821 0.26-0.36 0.15-0.40 3.00-3.75 0.30 --- 8.50-10.00 0.30-0.60 ---
 H22 T20822 0.30-0.40 0.15-0.40 1.75-3.75 0.30 --- 10.00-11.75 0.25-0.50 ---
 H23 T20823 0.25-0.35 0.15-0.40 11.00-12.75 0.30 --- 11.00-12.75 0.75-1.25 ---
 H24 T20824 0.42-0.53 0.15-0.40 2.50-3.50 0.30 --- 14.00-16.00 0.40-0.60 ---
 H25 T20825 0.22-0.32 0.15-0.40 3.75-4.50 0.30 --- 14.00-16.00 0.40-0.60 ---
 H26 T20826 0.45-0.55 0.15-0.40 3.75-4.50 0.30 --- 17.25-19.00 0.75-1.25 ---c
 Molybdenum Hot-Work Steel
 H42 T20842 0.55-0.70 0.15-0.40 3.75-4.50 0.30 4.50-5.55 5.50-6.75 1.75-2.20 ---c

 AISI

UNS

C

Mn

Cr

Ni

Mo

W

V

Co
 Air-Hardening, Medium Alloy, Cold-Work Steels
 A2 T30102 0.95-1.05 1.00 4.75-5.50 0.30 0.90-1.40 --- 0.15-0.50 ---
 A3 T30103 1.20-1.30 0.40-0.60 4.75-5.50 0.30 0.90-1.40 --- 0.80-1.40 ---
 A4 T30104 0.95-1.05 1.80-2.20 0.90-2.20 0.30 0.90-1.40 --- --- ---
 A6 T30106 0.65-0.75 1.80-2.50 0.90-1.20 0.30 0.90-1.40 --- --- ---
 A7 T30107 2.00-2.85 0.80 5.00-5.75 0.30 0.90-1.40 0.50-1.50 3.90-5.15 ---
 A8 T30108 0.50-0.60 0.50 4.75-5.50 0.30 1.15-1.65 1.00-1.50 --- ---
 A9 T30109 0.45-0.55 0.50 4.75-5.50 d 1.30-1.80 --- 0.80-1.40 ---
 A10 T30110 1.25-1.50 1.60-2.10 --- d 1.25-1.75 --- --- ---
 High-Carbon, High-Chromium, Cold-Work Steels
 D2 T30402 1.40-1.60 0.60 11.00-13.00 0.30 0.70-1.20 --- 1.10 ---
 D3 T30403 2.00-2.35 0.60 11.00-13.50 0.30 --- 1.00 1.00 ---
 D4 T30404 2.05-2.40 0.60 11.00-13.00 0.30 0.70-1.20 --- 1.00 ---
 D5 T30405 1.40-1.60 0.60 11.00-13.00 0.30 0.70-1.20 --- 1.00 2.50-3.50
 D7 T30407 2.15-2.50 0.60 11.50-13.50 0.30 0.70-1.20 --- 3.80-4.40 ---
 Oil-Hardening Cold-Work Steels
 O1 T30501 0.85-1.00 1.00-1.40 0.40-0.60 0.30 --- 0.40-0.60 0.30 ---
 O2 T30502 0.85-0.95 1.40-1.80 0.50 0.30 0.30 --- 0.30 ---
 O6 T30506 1.25-1.55 0.30-1.10 0.30 0.30 0.20-0.30 --- --- ---
 O7 T30507  1.10-1.30 1.00 0.35-0.85 0.30 0.30 1.00-2.00 0.40 ---
 Shock-Resisting Steels
 S1 T41901 0.40-0.55 0.10-0.40 1.00-1.80 0.30 0.50 1.50-3.00 0.15-0.30 ---
 S2 T41902 0.40-0.55 0.30-0.50 --- 0.30 0.30-0.60 --- 0.50 ---
 S5 T41905 0.50-0.65 0.60-1.00 0.50 --- 0.20-1.35 --- 0.35 ---
 S6 T41906 0.40-0.50 1.20-1.50 1.20-1.50 --- 0.30-0.50 --- 0.20-0.40 ---
 S7 T41907 0.45-0.55 0.20-0.90 3.00-3.50 --- 1.30-1.80 --- 0.20-0.30 ---d

 AISI

UNS

C

Mn

Cr

Ni

Mo

W

V

Co
 Low-Alloy Special Purpose Tool Steels
 L2 T61202 0.45-1.00 0.10-0.90 0.70-1.20 --- 0.25 --- 0.10-0.30 ---c
 L6 T61206 0.65-0.75 0.25-0.80 0.60-1.20 1.25-2.00 0.50 --- 0.20-0.30 ---d
 Low-Carbon Mold Steels
 P2 T51602 0.10 0.10-0.40 0.75-1.25 0.10-0.50 0.15-0.40 --- --- ---
 P3 T51603 0.10 0.20-0.60 -.40-0.75 1.00-1.50 --- --- --- ---
 P4 T51604 0.12 0.20-0.60 4.00-5.25 --- 0.40-1.00 --- --- ---
 P5 T51605 0.10 0.20-0.60 2.00-2.50 0.35 --- --- --- ---
 P6 T51606 0.05-0.15 0.35-0.70 1.25-1.75 3.25-3.75 --- --- --- ---
 P20 T51620 0.28-0.40 0.60-1.00 1.40-2.00 --- 0.30-0.55 --- --- ---
 P21 T51621 0.18-0.22 0.20-0.40 0.50 3.90-4.25 --- --- 0.15-0.25 1.05-1.25 Al
 Water-Hardening Tool Steels
 W1 T72301 0.70-1.50 0.10-0.40 0.15 0.20 0.10 0.15 0.10 ---
 W2 T72302 0.85-1.50 0.10-0.40 0.15 0.20 0.10 0.15 0.15-0.35 ---
 W5 T72305 1.05-1.15 0.10-0.40 0.40-0.60 0.20 0.10 0.15 0.10 ---
 a. AISI Class 1 tool steel.
 b. AISI Class 2 tool steel.
 c. Available in several carbon ranges.
 d. Vanadium addition is optional.
 e. All tool steels listed, except group W, contain 0.25% max. copper, 0.030% max. phosphorus and sulphur; groupW tool steels contain
 0.20% copper, 0.025% max. phosphorus and sulphur. Where specified, sulphur may be increased to 0.060% to 0.15% to improve
 machinability of group A, D, H, M and T tool steels. Although the silicon content is not listed due to space, it is specified; see appropriate
 standard grade for details.
 All single values are maximums, unless otherwise specified.
 [ Go To Top ]

 The Ferrous Metals Data Book

 e. All tool steels listed, except group W, contain 0.25% max. copper, 0.030% max. phosphorus and sulphur; groupW tool steels contain  0.20% copper, 0.025% max. phosphorus and sulphur. Where specified, sulphur may be increased to 0.060% to 0.15% to improve  machinability of group A, D, H, M and T tool steels. Although the silicon content is not listed due to space, it is specified; see appropriate  standard grade for details.  All single values are maximums, unless otherwise specified.  [ Go To Top ]

 The Ferrous Metals Data Book