Heat Treating and Tempering information

8670

Hardening

Austenizing temperature - 1,550
Hold/Soak Time - 3-10 minutes
Expected Rc (as quenched) - 63-65

Oil Quench - Parks 50

Tempering

Temper twice for 2hrs.

300°F - 325°F - 62-63
375°F - 400°F - 61-62

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15N20

Hardening

Austenizing temperature - 1,450 to 1,480°F / 801°C
Hold/Soak Time - 5-15 minutes
Expected Rc (as quenched) - 64-65

Oil Quench

Tempering

Temper twice for 2hrs.

400°F / 204°C - 60-61
450°F / 232°C  - 57-58
500°F / 260°C  - 55-56

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80CRV2

Hardening

Austenizing temperature - 1,465 to 1480°F / 801°C
Hold/Soak Time - 5-15 minutes 
Expected Rc (as quenched) - 64-65

Oil Quench

Tempering

Temper twice for 2hrs.

350°F / 177°C - 63-64
400°F / 204°C - 60-61
450°F / 232°C - 57-58
500°F / 260°C - 55-56

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440C

Hardening

Pre-Heat/Equalizing - 1,425°F / 760°C (hold 15 minutes)
Austenizing temperature - 1,875°F / 1038°C Soak 30 minutes
Expected Rc (as quenched prior to cryo) - 59Rc (61 after Cryo)

Air Quench

Tempering

Temper twice for 2hrs.

300°F / 149°C - 60
400°F / 204°C - 59
500°F / 260°C - 57
600°F / 316°C - 56

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5160

Hardening

Austenizing temperature - 1,465 to 1480°F / 801°C
Hold/Soak Time - 5-15 minutes 
Expected Rc (as quenched) - 63-62

Oil Quench

Tempering

Temper twice for 2hrs.

350°F / 177°C - 62-61
400°F / 204°C - 60-59
450°F / 232°C - 57-58
500°F / 260°C - 55-56

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52100

Hardening

Austenizing temperature - 1,465 to 1480°F / 801°C 
Hold/Soak Time - 5-15 minutes 
Expected Rc (as quenched) - 64-65

Oil Quench

Tempering

Temper twice for 2hrs.

350°F / 177°C - 63-64
400°F / 204°C - 60-61
450°F / 232°C - 57-58
500°F / 260°C - 55-56

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A2

Hardening

Pre-Heat/Equalizing - 1,450°F / 787°C (hold 15 minutes) 
Austenizing temperature - 1,750°F / 954°C Soak 30 minutes
Expected Rc (as quenched prior to cryo) - 63Rc (64 after Cryo)

Air or Oil Quench

Tempering

Temper twice for 2hrs.

300°F / 149°C - 64
350°F / 177°C - 63
400°F / 204°C - 62
450°F / 232°C - 61
500°F / 260°C - 60
600°F / 316°C - 58

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CPM 154

Hardening

Pre-Heat/Equalizing - 1,400°F / 760°C (hold 15 minutes) 
Austenizing temperature - 1,950°F / 1065°C Soak 30 minutes
Expected Rc (as quenched prior to cryo) - 61Rc (63 after Cryo)

Air Quench

Tempering

Temper twice for 2hrs.

300°F / 149°C - 63
400°F / 204°C - 62
600°F / 316°C - 60

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O-1

Hardening

Austenizing temperature - 1,465 to 1480°F / 801°C
Hold/Soak Time - 20-30 minutes
Expected Rc (as quenched) - 64-65

Oil Quench

Tempering

Temper twice for 2hrs.

350°F / 177°C - 63-64
400°F / 204°C - 60-61
450°F / 232°C - 57-58
500°F / 260°C - 55-56

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W-2

Hardening

Austenizing temperature - 1,450 to 1,475°F / 801°C
Hold/Soak Time - 5-15 minutes
Expected Rc (as quenched) - 64-65

Oil Quench - Parks 50

Tempering

Temper twice for 2hrs.

350°F / 177°C - 63-64
400°F / 204°C - 60-61
450°F / 232°C - 57-58
500°F / 260°C - 55-56

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1084

Hardening

Austenizing temperature - 1,450 to 1,480°F / 801°C
Hold/Soak Time - 5-15 minutes
Expected Rc (as quenched) - 64-65

Oil Quench - Parks 50

Tempering

Temper twice for 2hrs.

350°F / 177°C - 63-64
400°F / 204°C - 60-61
450°F / 232°C - 57-58
500°F / 260°C - 55-56

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