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Crucible Steel 17Cr-4Ni Super-X® Precipitation Hardening Stainless Steel

Category Metal , Ferrous Metal , Martensitic , Stainless Steel , Precipitation Hardening Stainless
Manufacturer Crucible Steel
Trade Name
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Crucible Steel 17Cr-4Ni Super-X® Precipitation Hardening Stainless Steel.pdf
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Material Notes:
Crucible 17Cr-4Ni is a version of 17CR-4Ni which has been modified to substantially improve machinability and other properties. Patented 17Cr-4Ni Super-X meets industry specifications for 17Cr-4Ni. The machinability improvement, of up to 45% over conventional solution-treated ( Condition A) 17Cr-4Ni material, has been achieved by close control of the chemical composition within the standard range.Crucible 17Cr-4Ni shows a significant improvement in ductility in all conditions, especially the solution-treated condition. In addition, the steel is markedly tougher than conventional 17Cr-4Ni as measured by Charpy impact tests.Crucible 17Cr-4Ni Super-X 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.
Physical Properties Metric English Comments
Density 7.75 g/cc
0.280 lb/in³
A
7.86 g/cc
0.284 lb/in³
H1150
Mechanical Properties Metric English Comments
Hardness, Brinell 302
302
A
332
332
H1100
409
409
H925
Hardness, Rockwell C 27
27
H1150-M
36
36
H1075
44
44
H900
Tensile Strength, Ultimate 862 MPa
125000 psi
H1150-M
931 MPa
135000 psi
A
1170 MPa
170000 psi
H1025
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 0.200 %
125000 psi

@Strain 0.200 %
H1150
1030 MPa

@Strain 0.200 %
150000 psi

@Strain 0.200 %
H1075
1280 MPa

@Strain 0.200 %
185000 psi

@Strain 0.200 %
H900
641 MPa

@Strain 2.00 %,
Temperature 538 °C
93000 psi

@Strain 2.00 %,
Temperature 1000 °F
H1150
731 MPa

@Strain 2.00 %,
Temperature 538 °C
106000 psi

@Strain 2.00 %,
Temperature 1000 °F
H900
827 MPa

@Strain 2.00 %,
Temperature 316 °C
120000 psi

@Strain 2.00 %,
Temperature 600 °F
H1150
1030 MPa

@Strain 2.00 %,
Temperature 316 °C
150000 psi

@Strain 2.00 %,
Temperature 600 °F
H900
Elongation at Break 15 %
15 %
in 2", A
17.5 %
17.5 %
in 2", H1025
24 %
24 %
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 60 %
60 %
H900
62 %
62 %
H925
67 %
67 %
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
Modulus of Elasticity 197 GPa
28500 ksi
Tension; H900
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 GPa
10000 ksi
H1075 and H1150
77.2 GPa
11200 ksi
H900
Charpy Impact 136 J
100 ft-lb
H900
169 J
125 ft-lb
H1150-M
Thermal Properties Metric English Comments
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 Properties Metric English Comments
Carbon, C 0.020 %
0.020 %
Chromium, Cr 15.25 %
15.25 %
Copper, Cu 3.5 %
3.5 %
Iron, Fe 75.07 %
75.07 %
As Remainder
Manganese, Mn 0.60 %
0.60 %
Nb + Ta 0.20 %
0.20 %
Nickel, Ni 4.8 %
4.8 %
Nitrogen, N 0.015 %
0.015 %
Phosphorous, P 0.025 %
0.025 %
Silicon, Si 0.50 %
0.50 %
Sulfur, S 0.020 %
0.020 %
Electrical Properties Metric English Comments
Electrical Resistivity 0.0000770 ohm-cm
0.0000770 ohm-cm
H900
0.0000980 ohm-cm
0.0000980 ohm-cm
A
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