Bohler-Uddeholm AISI D2 Cold Work Tool Steel

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Bohler-Uddeholm AISI D2 Cold Work Tool Steel
Categories:	Metal; Ferrous Metal; Alloy Steel; Tool Steel; Cold Work Steel
Material Notes:	AISI D2 is a high-carbon, high-chromium tool steel alloyed with molybdenum and vanadium AISI AD2 is characterized by: High wear resistance High compressive strength Good through-hardening properties High stability in hardening Good resistance to tempering-back Applications: AISI D2 is recommended for tools requiring very high wear resistance, combined with moderate toughness (shock-resistance). AISI D2 can be supplied in various finishes, including the hot-rolled, pre-machined and fine machined condition.
Key Words:	AISI D2; W.-Nr. 1.2379
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Physical Properties	Original Value	Comments

Density	0.277 lb/in³	hardened to 62 HRC
	0.275 lb/in³ @Temperature 399 °C	hardened to 62 HRC
	0.276 lb/in³ @Temperature 199 °C	hardened to 62 HRC

Mechanical Properties	Original Value	Comments
Hardness, Brinell	210	Soft annealed
Modulus of Elasticity	30450 ksi	(hardened to 62 HRC)
	26100 ksi @Temperature 399 °C	hardened to 62 HRC
	29000 ksi @Temperature 199 °C	hardened to 62 HRC
Compressive Yield Strength	1650 MPa	0.2%, hardened to 50 HRC
	1900 MPa	0.2%, hardened to 55 HRC
	2150 MPa	0.2%, hardened to 60 HRC
	2200 MPa	0.2%, hardened to 62 HRC

Thermal Properties	Original Value	Comments
CTE, linear	6.20 µin/in-°F @Temperature 20.0 - 200 °C	high temp. tempering, hardened to 62 HRC
	6.70 µin/in-°F @Temperature 20.0 - 400 °C	high temp. tempering, hardened to 62 HRC
	6.80 µin/in-°F @Temperature 20.0 - 200 °C	low temp. tempering, hardened to 62 HRC
Specific Heat Capacity	0.110 BTU/lb-°F @Temperature 20.0 °C	hardened to 62 HRC
Thermal Conductivity	20.0 W/m-K @Temperature 20.0 °C	hardened to 62 HRC
	21.0 W/m-K @Temperature 199 °C	hardened to 62 HRC
	23.0 W/m-K @Temperature 399 °C	hardened to 62 HRC

Component Elements Properties	Original Value	Comments
Carbon, C	1.55 %
Chromium, Cr	11.8 %
Iron, Fe	84.35 %	As Balance
Manganese, Mn	0.40 %
Molybdenum, Mo	0.80 %
Silicon, Si	0.30 %
Vanadium, V	0.80 %

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NBUCOR21 / 15490

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