Assab Steels ASSAB 88 Cold Work Steel

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Assab Steels ASSAB 88 Cold Work Steel
Categories:	Metal; Ferrous Metal; Chrome-moly Steel; Tool Steel; Cold Work Steel
Material Notes:	ASSAB 88 (SLEIPNER) is a chromium-molybdenum-vanadium alloyed tool steel which is characterized by: Good wear resistance Good chipping resistance High compressive strength High hardness (>60HRC) after high temperature tempering Good through-hardening properties Good stability in hardening Good resistance to tempering back Good WEDM properties Good machinability and grindability Good surface treatment properties ASSAB 88 (SLEIPNER) is a general purpose steel for cold work tooling. ASSAB 88 (SLEIPNER) is recommended for medium run tooling applications. Examples: Blanking and fine blanking Shearing Forming Coining Cold forging Cold extrusion Thread rolling Drawing and deep drawing Powder pressing
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Physical Properties	Metric	English	Comments

Density	7.72 g/cc	0.279 lb/in³
	7.61 g/cc @Temperature 400 °C	0.275 lb/in³ @Temperature 752 °F
	7.67 g/cc @Temperature 200 °C	0.277 lb/in³ @Temperature 392 °F

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell C	55	55	1075°C Austenitizing temperature, for tempering at 400°C
	56	56	1075°C Austenitizing temperature, for tempering at 250°C
	58	58	1050°C Austenitizing temperature, for tempering at 400°C
	59	59	1030°C Austenitizing temperature, for tempering at 250°C
	59	59	1050°C Austenitizing temperature, for tempering at 250°C
	60	60	1030°C Austenitizing temperature, for tempering at 400°C
	60	60	1030°C Austenitizing temperature, for tempering at 550°C
	61	61	1050°C Austenitizing temperature, for tempering at 550°C
	62	62	Hardened and tempered.
	62.5	62.5	At 1075°C Austenitizing temperature (30 min)
	63	63	1075°C Austenitizing temperature, for tempering at 550°C
	64.25	64.25	At 1000°C Austenitizing temperature (30 min)
	64.5	64.5	At 1035°C Austenitizing temperature (30 min)
Modulus of Elasticity	205 GPa	29700 ksi
	180 GPa @Temperature 400 °C	26100 ksi @Temperature 752 °F
Compressive Yield Strength	2050 MPa	297000 psi	approximate, Hardness HRC 55 R_c0.2
	2500 MPa	363000 psi	approximate, Hardness HRC 62 R_c0.2

Thermal Properties	Metric	English	Comments
CTE, linear	11.6 µm/m-°C @Temperature 20.0 - 200 °C	6.44 µin/in-°F @Temperature 68.0 - 392 °F	after high temperature tempering
	12.4 µm/m-°C @Temperature 20.0 - 400 °C	6.89 µin/in-°F @Temperature 68.0 - 752 °F	after high temperature tempering
	12.7 µm/m-°C @Temperature 20.0 - 200 °C	7.06 µin/in-°F @Temperature 68.0 - 392 °F	after low temperature tempering (60 HRC)
Specific Heat Capacity	0.460 J/g-°C @Temperature 20.0 °C	0.110 BTU/lb-°F @Temperature 68.0 °F
Thermal Conductivity	20.0 W/m-K @Temperature 200 °C	139 BTU-in/hr-ft²-°F @Temperature 392 °F
	25.0 W/m-K @Temperature 400 °C	174 BTU-in/hr-ft²-°F @Temperature 752 °F

Component Elements Properties	Metric	English	Comments
Carbon, C	0.90 %	0.90 %
Chromium, Cr	7.8 %	7.8 %
Iron, Fe	86.9 %	86.9 %
Manganese, Mn	0.50 %	0.50 %
Molybdenum, Mo	2.5 %	2.5 %
Silicon, Si	0.90 %	0.90 %
Vanadium, V	0.50 %	0.50 %

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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NASSAB01 / 15019

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