Bohler-Uddeholm UDDEHOLM CORRAX® Precipitation Hardening Stainless Mold Steel

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Bohler-Uddeholm UDDEHOLM CORRAX® Precipitation Hardening Stainless Mold Steel
Categories:	Metal; Ferrous Metal; Stainless Steel; Precipitation Hardening Stainless; Tool Steel; Mold Steel
Material Notes:	A precipitation hardening stainless steel which offers excellent high corrosion resistance, excellent dimensional stability during hardening and good wear resistance. It can be used at its as-supplied hardness of 34-36 HRC, or a low-temperature aging treatment can increase the hardness up to 50 HRC. CORRAX® is characterized by: Extremely good dimensional stability during the aging process High uniformity of properties even in large dimensions Very good weldability; no pre-heating necessary No hard "white layer" after EDM Corrosion resistance superior to AISI 420 and AISI 440C Applications: Injection moulds for corrosive plastics, rubber and medical and food industry Extrusion dies Plastic processing - screws Engineering parts
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Physical Properties	Original Value	Comments

Density	0.280 lb/in³	hardened to 46 HRC

Mechanical Properties	Original Value	Comments
Hardness, Rockwell C	34	Solution treated (Delivery condition)
Tensile Strength, Ultimate	160000 psi	Solution treated ~ 34 HRC
	170000 psi	Aged to ~ 40 HRC
	220000 psi	Aged to ~ 46 HRC
	250000 psi	Aged to ~ 50 HRC
Tensile Strength, Yield	230000 psi	Aged to ~ 50 HRC
	100000 psi @Strain 0.2 %	Solution treated ~ 34 HRC
	150000 psi @Strain 0.2 %	Aged to ~ 40 HRC
	200000 psi @Strain 0.2 %	Aged to ~ 46 HRC
Modulus of Elasticity	29000 ksi	(hardened to 46 HRC)
	25000 ksi @Temperature 399 °C	hardened to 46 HRC
	28000 ksi @Temperature 199 °C	hardened to 46 HRC
Compressive Yield Strength	900 MPa	0.2%, Solution treated ~ 34 HRC
	1300 MPa	0.2%, Aged to ~ 40 HRC
	1600 MPa	0.2%, Aged to ~ 46 HRC
	1800 MPa	0.2%, Aged to ~ 50 HRC
Impact Test	4.00 - 13.0 ft-lb	50 HRC
	15.0 - 30.0 ft-lb	34 HRC

Thermal Properties	Original Value	Comments
CTE, linear	6.50 µin/in-°F @Temperature 199 °C	hardened to 46 HRC
	6.80 µin/in-°F @Temperature 399 °C	hardened to 46 HRC
Thermal Conductivity	18.0 W/m-K @Temperature 199 °C	hardened to 46 HRC
	21.0 W/m-K @Temperature 399 °C	hardened to 46 HRC
Shrinkage	0.070 - 0.25 % @Temperature 524 - 621 °C, Time 14400 sec
	0.070 - 0.25 % @Temperature 524 - 621 °C, Time 14400 sec	Transverse

Component Elements Properties	Original Value	Comments
Aluminum, Al	1.6 %
Carbon, C	0.030 %
Chromium, Cr	12 %
Iron, Fe	75.17 %	as balance
Manganese, Mn	0.30 %
Molybdenum, Mo	1.4 %
Nickel, Ni	9.2 %
Silicon, Si	0.30 %

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NBUCOR23 / 15492

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