Crucible Steel WR-95 Tool Steel, AISI H10 Modified

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Crucible Steel WR-95 Tool Steel, AISI H10 Modified
Categories:	Metal; Ferrous Metal; Tool Steel
Material Notes:	WR-95 is a modified H10, with cobalt added to improve its high temperature properties. It is an upgrade from H13 in applications requiring improved hot hardness or heat check resistance, at a slight decrease in toughness. It may be used at tool temperatures up to about 1100F, with brief exposures up to about 1200F. Information provided by Crucible Industries
Key Words:	AISI H10 Modified
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Physical Properties	Original Value	Comments

Density	0.283 lb/in³

Mechanical Properties	Original Value	Comments
Hardness, Rockwell C	40.5 @Tempering Temp. 649 °C	air cooled from 1900°F then tempered
	50.5 @Tempering Temp. 621 °C	air cooled from 1900°F then tempered
	54.5 @Tempering Temp. 593 °C	air cooled from 1900°F then tempered
	57 @Tempering Temp. 566 °C	air cooled from 1900°F then tempered
	58 @Tempering Temp. 538 °C	air cooled from 1900°F then tempered
Modulus of Elasticity	30000 ksi
Charpy Impact	9.00 ft-lb @Tempering Temp. 538 °C	air cooled from 1900°F then tempered; V-notch
	10.0 ft-lb @Tempering Temp. 566 °C	air cooled from 1900°F then tempered; V-notch
	12.0 ft-lb @Tempering Temp. 593 °C	air cooled from 1900°F then tempered; V-notch
	14.0 ft-lb @Tempering Temp. 621 °C	air cooled from 1900°F then tempered; V-notch
	15.5 ft-lb @Tempering Temp. 649 °C	air cooled from 1900°F then tempered; V-notch

Thermal Properties	Original Value	Comments
CTE, linear	6.30 µin/in-°F @Temperature 21.1 - 93.3 °C
	6.50 µin/in-°F @Temperature 21.1 - 260 °C
	6.70 µin/in-°F @Temperature 21.1 - 427 °C
	7.10 µin/in-°F @Temperature 21.1 - 538 °C
	7.40 µin/in-°F @Temperature 21.1 - 649 °C
Thermal Conductivity	180 BTU-in/hr-ft²-°F @Temperature 93.3 °C

Processing Properties	Original Value	Comments
Processing Temperature	1550 °F	Critical Thermal Treatment Temperature

Component Elements Properties	Original Value	Comments
Carbon, C	0.35 %
Chromium, Cr	3.5 %
Cobalt, Co	2.0 %
Iron, Fe	89.85 %	as balance
Manganese, Mn	0.30 %
Molybdenum, Mo	2.5 %
Silicon, Si	0.90 %
Vanadium, V	0.60 %

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NCRUC933 / 160384

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