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Elmet Technologies

Crucible Steel 17Cr-4Ni Precipitation Hardening Stainless Steel
Categories: Metal; Ferrous Metal; Martensitic; Stainless Steel; Precipitation Hardening Stainless
Material Notes: Crucible 17Cr-4Ni is a precipitation-hardening stainless steel which is capable of a high strength and hardness levels after a relatively simple heat-treatment procedure. This grade is martensitic and magnetic in both the solution-treated and precipitation-hardened conditions. It has high resistance to crack propagation, good transverse properties, and corrosion resistance is normally superior to the regular martensitic chromium-type of stainless steel. Because of the single low-temperature (900-1150°F) precipitation-hardening heat treatment of this grade, scaling and distortion are virtually eliminated. This enables materials to be finish machined to close tolerance prior to heat treatment.

Information provided by Crucible Specialty Metals.
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Physical PropertiesMetricEnglishComments
Density 7.75 g/cc0.280 lb/in³A
 7.86 g/cc0.284 lb/in³H1150
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 302302A
 332332H1100
 409409H925
Hardness, Rockwell C 2727H1150-M
 3636H1075
 4444H900
Tensile Strength, Ultimate 862 MPa125000 psiH1150-M
 1030 MPa150000 psiA
 1170 MPa170000 psiH1025
 662 MPa
@Temperature 538 °C		96000 psi
@Temperature 1000 °F		H1150
 820 MPa
@Temperature 538 °C		119000 psi
@Temperature 1000 °F
 855 MPa
@Temperature 316 °C		124000 psi
@Temperature 600 °F		H1150
 1190 MPa
@Temperature 316 °C		173000 psi
@Temperature 600 °F		H900
Tensile Strength, Yield  862 MPa
@Strain 0.2 %		125000 psi
@Strain 0.2 %		H1150
 1030 MPa
@Strain 0.2 %		150000 psi
@Strain 0.2 %		H1075
 1280 MPa
@Strain 0.2 %		185000 psi
@Strain 0.2 %		H900
 641 MPa
@Strain 2 %,
Temperature 538 °C		93000 psi
@Strain 2 %,
Temperature 1000 °F		H1150
 731 MPa
@Strain 2 %,
Temperature 538 °C		106000 psi
@Strain 2 %,
Temperature 1000 °F		H900
 827 MPa
@Strain 2 %,
Temperature 316 °C		120000 psi
@Strain 2 %,
Temperature 600 °F		H1150
 1030 MPa
@Strain 2 %,
Temperature 316 °C		150000 psi
@Strain 2 %,
Temperature 600 °F		H900
Elongation at Break 10 %10 %in 2", A
 15 %15 %in 2", H1025
 22 %22 %in 2", H1150-M
 10 %
@Temperature 316 °C		10 %
@Temperature 600 °F		in 2"; H900
 12 %
@Temperature 316 °C		12 %
@Temperature 600 °F		in 2", H1150
 15 %
@Temperature 538 °C		15 %
@Temperature 1000 °F		in 2"; H900
 15 %
@Temperature 538 °C		15 %
@Temperature 1000 °F		in 2", H1150
Reduction of Area 50 %50 %H900
 54 %54 %H925
 58 %58 %H1100
 31 %
@Temperature 316 °C		31 %
@Temperature 600 °F		H900
 46 %
@Temperature 538 °C		46 %
@Temperature 1000 °F		H900
 54 %
@Temperature 316 °C		54 %
@Temperature 600 °F		H1150
 55 %
@Temperature 538 °C		55 %
@Temperature 1000 °F		H1150
Rupture Strength  413.7 MPa
@Temperature 32.2 °C,
Time 3.60e+6 sec		60000 psi
@Temperature 90.0 °F,
Time 1000 hour
 655.0 MPa
@Temperature 482 °C,
Time 360000 sec		95000 psi
@Temperature 900 °F,
Time 100 hour
 1089 MPa
@Temperature 316 °C,
Time 3.60e+6 sec		158000 psi
@Temperature 600 °F,
Time 1000 hour
 1131 MPa
@Temperature 316 °C,
Time 360000 sec		164000 psi
@Temperature 600 °F,
Time 100 hour
Tensile Modulus 197 GPa28500 ksiH900
Poissons Ratio 0.270.27H900; Calculated
Fatigue Strength  531 MPa
@# of Cycles 1.00e+8 		77000 psi
@# of Cycles 1.00e+8
 621 MPa
@# of Cycles 1.00e+7 		90000 psi
@# of Cycles 1.00e+7
Shear Modulus 68.9 GPa10000 ksiH1075 and H1150
 77.2 GPa11200 ksiH900
Charpy Impact 23.0 J17.0 ft-lbH900
 36.6 J27.0 ft-lbH1150-M
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.0000770 ohm-cm0.0000770 ohm-cmH900
 0.0000980 ohm-cm0.0000980 ohm-cmA
 
Thermal PropertiesMetricEnglishComments
CTE, linear  10.8 µm/m-°C
@Temperature 21.1 - 93.3 °C		6.00 µin/in-°F
@Temperature 70.0 - 200 °F		A and H900
 11.3 µm/m-°C
@Temperature 21.1 - 93.3 °C		6.30 µin/in-°F
@Temperature 70.0 - 200 °F		H1075
 11.3 µm/m-°C
@Temperature 21.1 - 427 °C		6.30 µin/in-°F
@Temperature 70.0 - 800 °F		A
 11.9 µm/m-°C
@Temperature 21.1 - 93.3 °C		6.60 µin/in-°F
@Temperature 70.0 - 200 °F		H1150
 13.0 µm/m-°C
@Temperature 21.1 - 427 °C		7.20 µin/in-°F
@Temperature 70.0 - 800 °F		H1150
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  17.9 W/m-K
@Temperature 149 °C		124 BTU-in/hr-ft²-°F
@Temperature 300 °F		H900
 22.6 W/m-K
@Temperature 482 °C		157 BTU-in/hr-ft²-°F
@Temperature 900 °F		H900
 
Component Elements PropertiesMetricEnglishComments
Carbon, C <= 0.070 %<= 0.070 %
Chromium, Cr 15.5 - 17.5 %15.5 - 17.5 %
Copper, Cu 3.0 - 5.0 %3.0 - 5.0 %
Iron, Fe >= 69.91 %>= 69.91 %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 %
Phosphorus, P <= 0.040 %<= 0.040 %
Silicon, Si <= 1.0 %<= 1.0 %
Sulfur, S <= 0.030 %<= 0.030 %

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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NCRUC052 / 16045

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