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17-7 PH Stainless Steel, RH950, plate, sheet, and strip
Categories: Metal; Ferrous Metal; Stainless Steel; Precipitation Hardening Stainless; T S10000 Series Stainless Steel
Material Notes: Processing: RH950 - heated to austenitic range, 1040°C (1900°F), and water quenched. Reheated to 925°C (1700°F) to precipitate carbides. The austenite is transformed to martensite after cooling to room temperature and refrigerating at -75°C (-100°F). Tempered at 510°C (950°)

Applications: high strength high temperature applications, chemical processing equipment, heat exchangers, power boilers, superheater tubes

Corrosion Resistance: 17-7 PH is suitable for use in fresh water, industrial and marine atmospheres, and mild chemical and oxidizing environments. 17-7 PH should not be used in salt water or reducing environments.
Key Words: UNS S17700, double treatment alloy, RH950, plate, sheet, and strip, 17-7PH, 17-7 PH, 17/7PH, 17/7 PH, Precipitation Hardening
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Physical PropertiesMetricEnglishComments
Density 7.80 g/cc0.282 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Rockwell C <= 43<= 43
Tensile Strength, Ultimate 1450 MPa210000 psiStrength varies with thickness.
Tensile Strength, Yield 1310 MPa190000 psiStrength varies with thickness.
Elongation at Break 1.0 - 6.0 %1.0 - 6.0 %
Modulus of Elasticity 204 GPa29600 ksi
Fracture Toughness 76.0 MPa-m½69.2 ksi-in½Longitudinal, 44 HRC.
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.0000830 ohm-cm0.0000830 ohm-cm
 
Thermal PropertiesMetricEnglishComments
CTE, linear  11.0 µm/m-°C
@Temperature 0.000 - 100 °C		6.11 µin/in-°F
@Temperature 32.0 - 212 °F
 11.6 µm/m-°C
@Temperature 0.000 - 315 °C		6.44 µin/in-°F
@Temperature 32.0 - 599 °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  16.4 W/m-K
@Temperature 100 °C		114 BTU-in/hr-ft²-°F
@Temperature 212 °F
 21.8 W/m-K
@Temperature 500 °C		151 BTU-in/hr-ft²-°F
@Temperature 932 °F
Melting Point 1400 - 1450 °C2550 - 2640 °F
Solidus 1400 °C2550 °F
Liquidus 1450 °C2640 °F
 
Component Elements PropertiesMetricEnglishComments
Aluminum, Al 0.75 - 1.5 %0.75 - 1.5 %
Carbon, C <= 0.090 %<= 0.090 %
Chromium, Cr 16 - 18 %16 - 18 %
Iron, Fe 70.6 - 76.8 %70.6 - 76.8 %as balance
Manganese, Mn <= 1.0 %<= 1.0 %
Nickel, Ni 6.5 - 7.75 %6.5 - 7.75 %
Phosphorus, P <= 0.040 %<= 0.040 %
Silicon, Si <= 1.0 %<= 1.0 %
Sulfur, S <= 0.040 %<= 0.040 %

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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MQM177D / 13559

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