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Crucible Steel 440A Chromium Steel

Category	Metal , Ferrous Metal , Stainless Steel , T 400 Series Stainless Steel
Manufacturer	Crucible Steel
Trade Name
Port	Shanghai port,China
Trade Terms	FOB, CFR, CIF
Payment Terms	L/C, T/T, Western Union
Download PDF	Crucible Steel 440A Chromium Steel.pdf
Price	EMAIL US sales@lookpolymers.com
	Online Service lookpolymers 27660005

Material Notes:

Crucible 440A is a hardenable chromium steel which is the toughest of the high chromium cutlery grades. This grade is magnetic at all times. Information provided by Crucible Specialty Metals.

Physical Properties	Metric	English	Comments
Specific Gravity	7.75 g/cc	7.75 g/cc

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	215	215
Hardness, Rockwell C	44	44	tempering temperature-1000°F
	57	57	as quenched
	57	57	tempering temperature- 212°F
Tensile Strength, Ultimate	724 MPa	105000 psi
Tensile Strength, Yield	414 MPa @Strain 0.200 %	60000 psi @Strain 0.200 %
Elongation at Break	20 %	20 %	in 2"
Reduction of Area	45 %	45 %
Modulus of Elasticity	200 GPa	29000 ksi

Thermal Properties	Metric	English
CTE, linear	10.3 µm/m-°C @Temperature -17.8 - 93.3 °C	5.70 µin/in-°F @Temperature 0.000 - 200 °F
	10.8 µm/m-°C @Temperature -17.8 - 316 °C	6.00 µin/in-°F @Temperature 0.000 - 600 °F
Specific Heat Capacity	0.460 J/g-°C @Temperature 0.000 - 100 °C	0.110 BTU/lb-°F @Temperature 32.0 - 212 °F
Thermal Conductivity	24.2 W/m-K @Temperature 93.3 °C	168 BTU-in/hr-ft²-°F @Temperature 200 °F
Melting Point	1370 - 1510 °C	2500 - 2750 °F
Solidus	1370 °C	2500 °F
Liquidus	1510 °C	2750 °F

Component Elements Properties	Metric	English	Comments
Carbon, C	0.60 - 0.75 %	0.60 - 0.75 %
Chromium, Cr	16 - 18 %	16 - 18 %
Iron, Fe	>= 78.43 %	>= 78.43 %	As Remainder
Manganese, Mn	<= 1.0 %	<= 1.0 %
Molybdenum, Mo	<= 0.75 %	<= 0.75 %
Phosphorous, P	<= 0.040 %	<= 0.040 %
Silicon, Si	<= 1.0 %	<= 1.0 %
Sulfur, S	<= 0.030 %	<= 0.030 %

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.00005994 ohm-cm @Temperature 23.0 °C	0.00005994 ohm-cm @Temperature 73.4 °F

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