Color Code: 
Ameralloy High Speed-2 is the most widely used type of high-speed steel. It is generally used for the same applications as T-1 high speed. Ameralloy High Speed-2 has higher carbon content and balanced analysis producing properties applicable to all general-purpose high speed uses.
Machinability Like all highly alloyed steels, High Speed-2 machines with somewhat more difficulty than the lower alloyed steels. It is rated at 65 as compared to a 1% carbon tool steel, which is rated at 100.
Critical points Critical points obtained by dilatometer tests when heating at a rate of 400° per hour and cooling at 30° per hour are as follows:
Heating – Ac range 1530° to 1610°F
Cooling – Ar range 1430° to 1380°F
Forging 2050°–2100°F, stop at 1800°F and cool slowly
Annealing 1600°F, cool slowly. Brinell 241 max.
Preheating 1550°F, soak before hardening
Hardening 2250° to 2275°F, oil-quench
Tempering 1000°–1050°F, Rockwell C 65-66
Standard lengths 10’–12’ or cut to specified length. Modified and special sizes available upon request. Prompt forging service available.
| 1/16 5/64 3/32 7/64 1/8 9/64 5/32 11/64 3/16 13/64 7/32 15/64 1/4 17/64 9/32 5/16 21/64 11/32 3/8 25/64 13/32 7/16 15/32 1/2 17/32 9/16 |
5/8 21/32 11/16 3/4 5/32 13/16 7/8 15/16 31/32 1 1.015 1.055 1-1 /16 1-1/8 1.160 1-3/16 1.192 1-7 /32 1-1/4 1.275 1-5/16 1.360 1-3/8 1-7 /16 1.450 1-1/2 |
1.515 1-9/16 1-19/32 1.610 1-5/8 1.650 1-11/16 1.700 1-3/4 1.765 1-49/64 1-25/32 1-13/16 1.860 1-7/8 1.890 1-15/16 1-31/32 2 2.015 2-1/64 2-1/32 2-1/16 2-1/8 2-3/16 2-1/4 |
2-17/64 2-5/16 2-3/8 2-7/16 2-1/2 2-17/32 2.515 2-9/16 2.610 2-5/8 2-11 /16 2-3/4 2-13/16 2-7/8 2-15/16 3 3.015 3-1 /16 3-1/8 3-1/4 3-5/16 3-3/8 3-7/16 3-1/2 3-9/16 3-5/8 |
3-11 /16 3-3/4 3-13/16 3-7/8 3-15/16 4 4-1/32 4-1/16 4-1/8 4-1/4 4-3/8 4-1/2 4-5/8 4-3/4 4-25/32 4-7/8 5 5-1/4 5-1/2 5-3/4 6 6-1/4 6-1/2 7 7-1/2 8 |
| 1/4 | 1/2 | 5/8 | 3/4 | 7/8 |
|---|---|---|---|---|
| x 1/4 x 1 x 1-1/2 3/8 x 3/8 x 1 x 1-1 /4 x 1-1 /2 x 2 x 3 |
x 1/2 x 3/4 x 1 x 1-1/2 x 2 x 2-1/2 x 3 x 4 x 6 x 8 x 10 x 12 |
x 5/8 x 1-1 /4 x 1-1 /2 x 2 x 2-1/4 |
x 3/4 x 1 x 1-1 /2 x 2 x 2-1/2 x 3 x 4 x 5 x 6 x 8 x 10 x 12 |
x 1-1/2 x 1-3/4 x 2 x 3 x 4 x 5 x 6 x 8 x 10 x 12 |
| 1 | 1-1/4 | 1-1/2 | 1-3/4 | 2 |
| x 1 x 1-1 /4 x 1-1 /2 x 2 x 2-1/2 x 3 x 4 x 5 x 6 x 8 x 10 x 12 |
x-1 /4 x 1-1 /2 x 2 x 2-1/2 x 3 x 4 x 5 x 6 x 8 x 10 x 12 |
x 1-1/2 x 2 x 2-1/2 x 3 x 4 x 6 x 8 x 10 x 12 |
x 1-3/4 x 2 x 2-1/2 x 3 x 4 x 5 x 6 x 8 x 10 x 12 |
x 2 x 2-1/2 x 3 x 3-1/2 x 4 x 5 x 6 x 8 x 10 x 12 |
| 2-1/2 | 3 | |||
| x 2-12 x 3 x 4 x 6 x 8 x 10 x 12 |
x 3 x 4 x 6 x 8 x 10 x 12 |
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