7/31/2019 AISI A10

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106

The data presented herein are typical values, and do not warrant suitability for any specific application or use of this material.

Normal variations in the chemical composition, the size of the product, and heat treatment parameter may result in different

values for the various physical and mechanical properties.

AISI A10___________

TYPICAL ANALYSIS

Carbon........ 1.35%

Manganese..... 1.80%

Silicon....... 1.20%

Nickel....... 1.85%

Molybdenum.... 1.50%

Tempering

Temp. (F) Hardness

As-quenched Rc

300 61/62

400 60/61

500 60

600 59

700 58

800 57/58

900 55/57

1000 50/55

1100 40

Uses . . . Gauges, arbors, forming rolls, shear blades,metal working dies and punches.

Forging . . . Heat slowly. Preheat to 1200 to 1250 F (650to 675 C). Start forging at 1800 to 1925 F (980 to

1050 C) and do not forge below 1600 F (870 C).

RECOMMENDED HEAT TREATING PRACTICE

Normalizing . . . Heat to 1450 F (790 C). Holding time,after uniform through heating, varies from about 15

min, for small sections, to about 1 hr, for large

sections. Cool from temperature in still air.

Annealing . . . Heat slowly and uniformly to 1410 to 1460F (765 to 795 C). Soak adequately for section size.

Restrict cooling rate to 15 F (10 C) per hour until

950 F (510 C) is reach after which cooling rate is

not critical. Typical annealed hardness, 235 to 269 HB.

For minimum hardness a second anneal can be used.

Repeat the cycle using 1350 F (730 C) as theaustenitizing temperature. N eight-step annealing

cycle has been recommended, as follows:

1. Heat to 1440 F (780 C) and for 2 hr

2. Cool to 1000 F (535 C) at 40 F (22 C) per hour

3. Air cool t room temperature

4. Reheat to 1440 F (780 C) and hold 1 hr per inch of

section

5. Cool to 1260 F (680 C) at any convenient rate

6. Equalize a 1260 F (680 C) for 2 hr

7. Cool to 950 F (510 C) at 15 F (8 C) per hour

maximum

8. Air cool to room temperature

Stress Relieving . . . Optional. Heat to 1200 to 1250 F(650 to 675 C)and hold for 1 hr per inch of cross

section (minimum of 1 hr). Cool in air.

Paxton & Vierling SteelE S T A B L I S H E D 1 8 8 5

Phone 712-347-5500 800-831-9252

Fax 712-347-6166

7/31/2019 AISI A10

2/2

107

The data presented herein are typical values, and do not warrant suitability for any specific application or use of this material.

Normal variations in the chemical composition, the size of the product, and heat treatment parameter may result in different

values for the various physical and mechanical properties.

AISI A10___________

Hardening . . . Heat slowly. Preheat at 1200 F (650 CAustenitize at 1450 to 1500 F (790 to 815 C), and hold

temperature for 30 min for small tools and 60 min for lar

tools. Air cool as evenly as possible on all side

particularly when cooling long flat dies. As quench

hardness, 62 to 64 HRC.

Tempering . . . Temper immediately at 350 to 800 F (175 425 C) after tool has cooled to about 120 to 150 F (50

65 C). Double temper, allowing tool to cool to ro

temperature before second temper. Range of hardness aft

tempering, 62 to 57 HRC.

Paxton & Vierling SteelE S T A B L I S H E D 1 8 8 5

Phone 712-347-5500 800-831-9252

Fax 712-347-6166