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Amardeep Steel Centre offers Type 17 chrome - 7 nickel stainless steel wire, also known as AISI 631. This
stainless steel wire possesses the corrosion resistance of Type 302 with superior strength and heat
resistance. It combines the high elastic qualities of music wire with the corrosion-resistant properties of
standard Type 302 stainless steel.
This grade of stainless steel wire is particularly suitable for various spring applications where long life is
required under severe service conditions. It exhibits excellent fatigue properties, ductility, high yield
strength, modulus of elasticity, and a favorable strength-to-weight ratio.
One of the advantages of 17 chrome - 7 nickel stainless wire is its ease of forming in Condition C, followed by
simple heat treatment to achieve high strength levels. The addition of aluminum to the alloy enables hardening
of the material.
Amardeep Steel Centre provides 17 chrome - 7 nickel stainless wire in the cold drawn Condition C. After forming
the wire into springs, it should be treated at 900ºF (482ºC) for one hour to achieve the maximum tensile
properties of Condition CH900 (cold drawn and age hardened). The available sizes range from 0.017" to 0.625",
conforming to ASTM A 313 and AMS-5678 standards.
For more detailed information on the availability and specifications of Type 17 chrome - 7 nickel stainless
steel wire, please contact Amardeep Steel Centre.
17-7 PH Stainless Steel - Spring Wire Properties
Spring Materials Stainless Steels The use of stainless spring steels has increased considerably in recent years. Several new compositions are now available to withstand corrosion. All of these materials can be used for high temperatures up to 650°F.
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17-7
PH ASTM A 313 (631) |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nominal Chemistry |
|
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Minimum Tensile
Strength
psi x 103 |
Cond CH 235-335 |
||||||||||||
|
E - Modulus of Elasticity
psi x 106 |
29.5 | ||||||||||||
| Design Stress % Minimum Tensile | 45 | ||||||||||||
|
G - Modulus in Torsion
>psi x 106 |
11.0 | ||||||||||||
|
Maximum Operating Temperature
°F |
650 | ||||||||||||
| Rockwell Hardness | C38-57 | ||||||||||||
|
Density
lb/in3 |
0.286 | ||||||||||||
| Shear Modulus GPa |
11600 80.0 |
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|
Method of Manufacture Chief Uses Special Properties |
Cold drawn & precipitation hardened after fabrication. High strength and general purpose corrosion resistance. Slightly magnetic in spring temper. | ||||||||||||
| Equivalent or Common Trade Names |
17-7 stainless
steel UNS S17700 ASTM A313 ASTM A613 AISI 631 AMS 5678 AMS 5529 SAE J217 |
| 17-7 PH Stainless Steel, CH900, wire | |
|---|---|
| Categories: | Metal; Ferrous Metal; Stainless Steel; Precipitation Hardening Stainless ; T S10000 Series Stainless Steel |
| Material Notes: | Processing: CH900 - heated to austenitic range, 1040°C (1900°F), and water quenched. Severely
cold worked (60-70%). The cold working induces a martensite transformation in the austenite. Tempered at
480°C (900°)
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, CH900, wire, 17-7PH, 17-7 PH, 17/7PH, 17/7 PH, Precipitation Hardening, ASTM A313, ASTM A313M, ASTM A555, ASTM A555M, AMS 5678D, AMS 2241L |
| Vendors: | Click hereto view all available suppliers for this material. click here if you are a supplier and would like information on how to add your listing to this material. |
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| Physical Properties | Metric | English | Comments |
|---|---|---|---|
| Density | 7.92 g/cc | 0.286 lb/in³ | |
| Mechanical Properties | Metric | English | Comments |
| Tensile Strength, Ultimate | 1200 MPa | 174000 psi | |
| Tensile Strength, Yield | 938 MPa @Strain 0.200 % |
136000 psi @Strain 0.200 % |
|
| Elongation at Break | 17.5 % | 17.5 % | gage length is 4 times diameter |
| Reduction of Area | 39 % | 39 % | |
| Modulus of Elasticity | 200 GPa | 29000 ksi | Typical for stainless steel |
| Thermal Properties | Metric | English | Comments |
| CTE, linear | 16.9 µm/m-°C @Temperature 21.0 - 100 °C |
9.39 µin/in-°F @Temperature 69.8 - 212 °F |
solution treated, 16.7 solution treated and aged. |
| 17.2 µm/m-°C @Temperature 20.0 - 250 °C |
9.56 µin/in-°F @Temperature 68.0 - 482 °F |
||
| 17.4 µm/m-°C @Temperature 21.0 - 500 °C |
9.67 µin/in-°F @Temperature 69.8 - 932 °F |
||
| 17.6 µm/m-°C @Temperature 21.0 - 650 °C |
9.78 µin/in-°F @Temperature 69.8 - 1200 °F |
solution treated | |
| 17.7 µm/m-°C @Temperature 21.0 - 750 °C |
9.83 µin/in-°F @Temperature 69.8 - 1380 °F |
solution treated | |
| 18.5 µm/m-°C @Temperature 21.0 - 750 °C |
10.3 µin/in-°F @Temperature 69.8 - 1380 °F |
solution treated and aged. | |
| 19.4 µm/m-°C @Temperature 21.0 - 900 °C |
10.8 µin/in-°F @Temperature 69.8 - 1650 °F |
solution treated | |
| 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 | 12.6 W/m-K @Temperature 21.0 °C |
87.4 BTU-in/hr-ft²-°F @Temperature 69.8 °F |
|
| 15.1 W/m-K @Temperature 150 °C |
105 BTU-in/hr-ft²-°F @Temperature 302 °F |
||
| 20.2 W/m-K @Temperature 425 °C |
140 BTU-in/hr-ft²-°F @Temperature 797 °F |
||
| 23.79 W/m-K @Temperature 600 °C |
165.1 BTU-in/hr-ft²-°F @Temperature 1110 °F |
||
| 24.7 W/m-K @Temperature 650 °C |
171 BTU-in/hr-ft²-°F @Temperature 1200 °F |
||
| Melting Point | 1370 - 1425 °C | 2500 - 2597 °F | |
| Solidus | 1370 °C | 2500 °F | |
| Liquidus | 1425 °C | 2597 °F | |
| Maximum Service Temperature, Air | 815 °C | 1500 °F | Continuous Service |
| 980 °C | 1800 °F | Intermittent | |
| Component Elements Properties | Metric | English | Comments |
| Aluminum, Al | <= 0.035 % | <= 0.035 % | |
| Boron, B | 0.0010 - 0.010 % | 0.0010 - 0.010 % | |
| Carbon, C | <= 0.080 % | <= 0.080 % | |
| Chromium, Cr | 13.5 - 16 % | 13.5 - 16 % | |
| Copper, Cu | <= 0.25 % | <= 0.25 % | |
| Iron, Fe | 56 % | 56 % | |
| Manganese, Mn | <= 2.0 % | <= 2.0 % | |
| Nickel, Ni | 24 - 27 % | 24 - 27 % | |
| Phosphorus, P | <= 0.040 % | <= 0.040 % | |
| Silicon, Si | <= 1.0 % | <= 1.0 % | |
| Sulfur, S | <= 0.030 % | <= 0.030 % | |
| Titanium, Ti | 1.9 - 2.35 % | 1.9 - 2.35 % | |
| Vanadium, V | 0.10 - 0.50 % | 0.10 - 0.50 % |
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