Assab Steels CALMAX Plastic Mold Material

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Assab Steels CALMAX Plastic Mold Material
Categories:	Metal; Ferrous Metal; Alloy Steel; Chrome-moly Steel
Material Notes:	CALMAX is a chromium-molybdenum-vanadium alloyed steel characterized by: High toughness Good wear resistance Good through hardening properties Good dimensional stability in hardening Good polishability Good weldability Good flame and induction hardenability Applications: Cold work applications: General blanking and forming, heavy duty blanking and forming, deep drawing, coining, cold extrusion dies with complicated geometry, rolls, shear blades, prototype tooling. Plastic moulding applications: Long run moulds, moulds for reinforced plastics, moulds for compression molding.
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Physical Properties	Original Value	Comments

Density	0.281 lb/in³
	0.276 lb/in³ @Temperature 400 °C
	0.279 lb/in³ @Temperature 200 °C

Mechanical Properties	Original Value	Comments
Hardness, Brinell	200	hardness supplied.
Hardness, Rockwell C	43	tempering temperature (2h + 2h) 600°C (1110°F)
	54	tempering temperature (2h + 2h) 400°C (750°F)
	58	Hardness as a function of austenitizing temperature. 900°C (1650°F) Austenitizing temperature
	59	tempering temperature (2h + 2h) 200°C (390°F)
	62	Hardness before tempering at 950°C (1740°F) Austenitizing temperature: Holding time: 30 minutes.
	63	Hardness before tempering at 960°C (1760°F) Austenitizing temperature: Holding time: 30 minutes.
	63	Hardness as a function of austenitizing temperature. 960°C (1785°F) Austenitizing temperature
	64	Hardness before tempering at 970°C (1780°F) Austenitizing temperature: Holding time: 30 minutes.
Modulus of Elasticity	194 GPa
	178 GPa @Temperature 400 °C
	188 GPa @Temperature 200 °C
Compressive Yield Strength	1900 MPa	Rc0.2. Hardness HRC 56.
	2000 MPa	Rc0.2. Hardness HRC 58.
	2100 MPa	Rc0.2. Hardness HRC 60.
Compressive Strength	2300 MPa	Rcm. Hardness HRC 56.
	2500 MPa	Rcm. Hardness HRC 58.
	2700 MPa	Rcm. Hardness HRC 60.
Fracture Toughness	29.0 - 32.0 MPa-m½	tempering range 200-450°C (390-842°F) respectively. Hardened at 960°C (1760°F). Quenched in air. Tempered twice.
Charpy Impact	12.0 J	tempering at 300°C (570°F). Hardened at 960°C (1760°F). Quenched in air. Tempered twice.
	15.0 J	tempering at 450°C (842°F). Hardened at 960°C (1760°F). Quenched in air. Tempered twice.
	32.0 J	tempering at 600°C (1110°F). Hardened at 960°C (1760°F). Quenched in air. Tempered twice.

Thermal Properties	Original Value	Comments
CTE, linear	11.7 µm/m-°C @Temperature 20.0 °C
	12.0 µm/m-°C @Temperature 20.0 - 200 °C
	13.0 µm/m-°C @Temperature 20.0 - 400 °C
Specific Heat Capacity	0.109 BTU/lb-°F @Temperature 20.0 °C
	0.126 BTU/lb-°F @Temperature 200 °C
	0.145 BTU/lb-°F @Temperature 400 °C
Thermal Conductivity	27.0 BTU-in/hr-ft²-°F @Temperature 200 °C
	32.0 BTU-in/hr-ft²-°F @Temperature 400 °C

Component Elements Properties	Original Value	Comments
Carbon, C	0.60 %
Chromium, Cr	4.5 %
Iron, Fe	93.05 %
Manganese, Mn	0.80 %
Molybdenum, Mo	0.50 %
Silicon, Si	0.35 %
Vanadium, V	0.20 %

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NASSAB31 / 15049

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