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AK Steel 17-7 PH® Precipitation Hardening Stainless Steel, Condition TH 1050

Category Metal , Ferrous Metal , Austenitic , Stainless Steel , Precipitation Hardening Stainless
Manufacturer AK Steel
Trade Name
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF AK Steel 17-7 PH® Precipitation Hardening Stainless Steel, Condition TH 1050.pdf
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Material Notes:
AK Steel 17-7 PH® provides high strength and hardness, excellent fatigue properties, good corrosion resistance, good formability, and minimum distortion upon heat treatment. This alloy provides valuable property combinations particularly well suited for aerospace applications. This special alloy also provides benefits for other applications requiring high strength and good corrosion resistance, as well as excellent properties for flat springs at temperatures up to 600°F (310°C). The material supplied from the mill is in Condition A. After fabrication, and conditioning treatments, the material is precipitation hardened into either Condition TH 1050 or Condition RH 950. To achieve the highest mechanical properties Condition A material is transformed to martensite at the mill by cold reduction to Condition C. After fabrication by the user a single low-temperature heat treatment is preformed to achieve condition CH 900.Information provided by AK Steel
Physical Properties Metric English Comments
Density 7.65 g/cc
0.276 lb/in³
Mechanical Properties Metric English Comments
Hardness, Rockwell C 43
43
Tensile Strength, Ultimate 1379 MPa
200000 psi
Tensile Strength, Yield 1276 MPa

@Strain 0.200 %
185100 psi

@Strain 0.200 %
Elongation at Break 9.0 %
9.0 %
in 2 inches
Modulus of Elasticity 200 GPa
29000 ksi
Thermal Properties Metric English Comments
CTE, linear 10.1 µm/m-°C

@Temperature 21.0 - 93.0 °C
5.61 µin/in-°F

@Temperature 69.8 - 199 °F
11.9 µm/m-°C

@Temperature <=427 °C
6.61 µin/in-°F

@Temperature <=801 °F
Thermal Conductivity 16.87 W/m-K

@Temperature 149 °C
117.1 BTU-in/hr-ft²-°F

@Temperature 300 °F
21.05 W/m-K

@Temperature 482 °C
146.1 BTU-in/hr-ft²-°F

@Temperature 900 °F
Component Elements Properties Metric English Comments
Aluminum, Al 0.75 - 1.5 %
0.75 - 1.5 %
Carbon, C <= 0.090 %
<= 0.090 %
Chromium, Cr 16 - 18 %
16 - 18 %
Iron, Fe 70.59 - 76.75 %
70.59 - 76.75 %
As Remainder
Manganese, Mn <= 1.0 %
<= 1.0 %
Nickel, Ni 6.5 - 7.75 %
6.5 - 7.75 %
Phosphorous, P <= 0.040 %
<= 0.040 %
Silicon, Si <= 1.0 %
<= 1.0 %
Sulfur, S <= 0.030 %
<= 0.030 %
Electrical Properties Metric English Comments
Electrical Resistivity 0.0000820 ohm-cm
0.0000820 ohm-cm
Magnetic Permeability 46 - 55
46 - 55
200 oersteds
120 - 167
120 - 167
50 oersteds
134 - 208
134 - 208
maximum
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