Crucible Steel CPM® S35VN™ Stainless Steel

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Crucible Steel CPM® S35VN™ Stainless Steel
Categories:	Metal; Ferrous Metal; Martensitic; Stainless Steel
Material Notes:	CPM S35VN is a martensitic stainless steel designed to offer improved toughness over CPM S30V. It is also easier to machine and polish than CPM S30V. Its chemistry has been rebalanced so that it forms some niobium carbides along with vanadium and chromium carbides. Substituting niobium carbides for some of the vanadium carbides makes CPM S35VN about 15-20% tougher than CPM S30V without any loss of wear resistance. CPM S35VN’s improved toughness gives it better resistance to edge chipping. Because both vanadium and niobium carbides are harder and more effective than chromium carbides in providing wear resistance, the CPM stainless blade steels offer improved edge retention over conventional high chromium steels such as 440C and D2. The CPM process produces very homogeneous, high quality steel characterized by superior dimensional stability, grindability, and toughness compared to steels produced by conventional melting practices. Information provided by Crucible Industries
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Physical Properties	Metric	English	Comments

Density	7.47 g/cc	0.270 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell C	>= 56.5	>= 56.5	austenitized at 1900°F, tempered at 1000°F + freeze
	60.5	60.5	austenitized at 1900°F then quenched
	<= 64	<= 64	austenitized at 2000°F, oil quenched + freeze
	57 @Tempering Temp. 538 °C	57 @Tempering Temp. 1000 °F	austenitized at 1900°F then quenched and tempered
	57.5 @Tempering Temp. 204 °C	57.5 @Tempering Temp. 400 °F	austenitized at 1900°F then quenched and tempered
	57.5 @Tempering Temp. 316 °C	57.5 @Tempering Temp. 600 °F	austenitized at 1900°F then quenched and tempered
Modulus of Elasticity	221 GPa	32100 ksi
Charpy Impact	16.3 J	12.0 ft-lb	Transverse C-notch

Thermal Properties	Metric	English	Comments
CTE, linear	11.0 µm/m-°C @Temperature 20.0 - 200 °C	6.11 µin/in-°F @Temperature 68.0 - 392 °F
	11.5 µm/m-°C @Temperature 20.0 - 315 °C	6.39 µin/in-°F @Temperature 68.0 - 599 °F
Thermal Conductivity	17.31 W/m-K @Temperature 93.0 °C	120.1 BTU-in/hr-ft²-°F @Temperature 199 °F

Component Elements Properties	Metric	English	Comments
Carbon, C	1.4 %	1.4 %
Chromium, Cr	14 %	14 %
Iron, Fe	79.1 %	79.1 %	as balance
Molybdenum, Mo	2.0 %	2.0 %
Niobium, Nb (Columbium, Cb)	0.50 %	0.50 %
Vanadium, V	3.0 %	3.0 %

Descriptive Properties
Edge Retention	1.45		CATRA Testing Relative to 440C
Pitting Resistance	250 mV		polarization curves in 5% NaCl

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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NCRUC903 / 160354

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