PROPRIETARY WM A-11 Tool steels

Material group: Ferrous Alloys / Tool steels

Country / Standard: PROPRIETARY

Data updates

Latest Update: 2018-05

Total number of updates: 1

Update History

This material has 34 properties — only a subset is shown here.

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PROPRIETARY WM A-11 Chemical Composition

CRITERIA

VALUE

UNIT

CAS NUMBER

CRITERIA

VALUE

2.45

UNIT

CAS NUMBER

7440-44-0

CRITERIA

VALUE

5.25

UNIT

CAS NUMBER

7440-47-3

CRITERIA

VALUE

0.50

UNIT

CAS NUMBER

7439-96-5

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7439-98-7

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7704-34-9

CRITERIA

VALUE

val1

UNIT

CAS NUMBER

7440-62-2

Ellwood Specialty Steel, Product Data Sheets,

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PROPRIETARY WM A-11 Physical Properties

Temperature

0 - 30°C 30 - 100°C 100 - 300°C ≥ 300°C

PROPERTY / VALUE

Modulus of Elasticity

190 — 210 GPa

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Density

7.418 — 8 kg/dm³

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Poisson Coefficient

0.27 — 0.3

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This material has 34 properties — only a subset is shown here.

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PROPRIETARY WM A-11 Heat Treatments

Preheating: 1500-1550°F, equalize.
Austenitizing (high heat): Heat rapidly from the preheat, typically by transferring to a second furnace. For Optimum Wear Resistance: Soak for 5 to 15 minutes. Furnace or Salt Bath: 2150°F. For Balance of Wear Resistance and Toughness: Soak for 15 to 30 minutes. Furnace or Salt Bath: 2050°F. For Maximum Toughness and minimum distortion in cooling: Soak for 30 to 60 minutes. Furnace: 1975°F. Salt Bath: 1950°F.
Quenching: Sections less than 3” thick may be air cooled to maximum hardness. Sections 3” thick or more must be quenched at a faster rate, using one of the methods below, to attain maximum hardness. For pressurized gas, the furnace should have a minimum quench pressure of 4 bars. The quench rate to below 1000°F is critical to obtain the desired properties. For oil, quench until black, about 900°F then cool in still air to 150-125°F. For salt maintained at 1000-1100°F equalize in the salt, then cool in still air to 150-125°F.
Tempering: Temper immediately after quenching. The typical tempering range is 1000-1100°F. Do not temper below 1000°F. Hold at temperature for 2 hours then air cool to ambient temperature. Double tempering is required. Triple tempering is required when austenitized at 2100°F.
Annealing: Must be performed after hot working and before rehardening. Heat at a rate not exceeding 400°F per hour to 1600-1650°F, and hold at temperature for 1 hour per inch of maximum thickness; 2 hours minimum. Then cool slowly with the furnace at a rate not exceeding 30°F per hour to 1000°F. Continue cooling to ambient temperature in the furnace or in air. The resultant hardness should be a maximum of 277 HBW.

PROPRIETARY WM A-11 Mechanical Properties

Temperature

0 - 30°C

PROPERTY / VALUE

Rockwell Hardness (HR)

45 — 65

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-Cross References

6Composition
18Mechanical Properties
8Physical Properties
1Heat Treatment
-Metallography
-Machinability

-Stress-Strain
-Formability
-Fatigue
-Fracture
-Creep

-Joints
-Coatings
-Dimensions
-Tribology

-Corrosion
-Ageing
-Weatherability
-Irradiation

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