Carpenter Custom 630 (17-Cr-4Ni) Precipitation Hardening Stainless Steel, Condition H 1075 (Heated 579°C)

Category	Metal , Ferrous Metal , Stainless Steel , Precipitation Hardening Stainless , T S10000 Series Stainless Steel
Manufacturer	Carpenter Technology Corporation (Cartech)
Trade Name
Port	Ningbo port,China
Trade Terms	FOB, CFR, CIF
Payment Terms	L/C, T/T, Western Union
Download PDF	Carpenter Custom 630 (17-Cr-4Ni) Precipitation Hardening Stainless Steel, Condition H 1075 (Heated 579°C).pdf
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Material Notes:

Data provided by Carpenter Technology Corporation.Custom 630 (17Cr-4Ni) is a martensitic precipitation/age-hardening stainless steel offering high strength and hardness along with excellent corrosion resistance. It has good fabricating characteristics and can be age hardened by a single-step, low temperature treatment. It has been used for a variety of applications including oil field valve parts, chemical process equipment, aircraft fittings, fasteners, pump shafts, nuclear reactor components, gears, paper mill equipment, missile fittings, and jet engine parts. Project 70® stainless Custom 630 is an improved machinability modification.

Physical Properties	Metric	English	Comments
Density	7.81 g/cc	0.282 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	341	341
Hardness, Knoop	363	363	Estimated from Rockwell C
Hardness, Rockwell C	36	36
Hardness, Vickers	349	349	Estimated from Rockwell C
Tensile Strength, Ultimate	1131 MPa	164000 psi
Tensile Strength, Yield	1020 MPa @Strain 0.200 %	148000 psi @Strain 0.200 %
Elongation at Break	17 %	17 %
Reduction of Area	59 %	59 %
Modulus of Elasticity	197 GPa	28600 ksi	H900 Condition
Poissons Ratio	0.272	0.272
Shear Modulus	77.4 GPa	11200 ksi	Calculated
Charpy Impact	61.0 J	45.0 ft-lb	V-notch

Thermal Properties	Metric	English	Comments
CTE, linear	11.3 µm/m-°C @Temperature 21.0 - 93.0 °C	6.28 µin/in-°F @Temperature 69.8 - 199 °F
	11.9 µm/m-°C @Temperature 21.0 - 316 °C	6.61 µin/in-°F @Temperature 69.8 - 601 °F
	12.2 µm/m-°C @Temperature 21.0 - 427 °C	6.78 µin/in-°F @Temperature 69.8 - 801 °F
Specific Heat Capacity	0.419 J/g-°C @Temperature 0.000 - 100 °C	0.100 BTU/lb-°F @Temperature 32.0 - 212 °F	condition H 900
Thermal Conductivity	17.9 W/m-K @Temperature 149 °C	124 BTU-in/hr-ft²-°F @Temperature 300 °F	condition H 900
	22.6 W/m-K @Temperature 482 °C	157 BTU-in/hr-ft²-°F @Temperature 900 °F	condition H 900

Component Elements Properties	Metric	English	Comments
Carbon, C	<= 0.070 %	<= 0.070 %
Chromium, Cr	15 - 17.5 %	15 - 17.5 %
Copper, Cu	3.0 - 5.0 %	3.0 - 5.0 %
Iron, Fe	73 %	73 %	as remainder
Manganese, Mn	<= 1.0 %	<= 1.0 %
Nb + Ta	0.15 - 0.45 %	0.15 - 0.45 %
Nickel, Ni	3.0 - 5.0 %	3.0 - 5.0 %
Niobium, Nb (Columbium, Cb)	<= 0.45 %	<= 0.45 %
Phosphorous, P	<= 0.040 %	<= 0.040 %
Silicon, Si	<= 1.0 %	<= 1.0 %
Sulfur, S	<= 0.030 %	<= 0.030 %
Tantalum, Ta	<= 0.45 %	<= 0.45 %

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000770 ohm-cm	0.0000770 ohm-cm	for condition H 900

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