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Hot rolled steel
17-7PH® Precipitation Hardening Alloy
17-7 Steel Strip, Coil, Foil, Wire, AMS 5528 (CONDA), AMS 5529 (COND C), ASTM A693, MIL-S25043APPLICATIONS●Springs●Washers●Clips●Surgical parts●Blades●Bellows●HoneycombDESCRIPTIONType 17-7PH® Precipitation Hardening Alloy is a semi-austenitic stainle
17-7 Steel Strip, Coil, Foil, Wire, AMS 5528 (CONDA), AMS 5529 (COND C), ASTM A693, MIL-S25043
APPLICATIONS
● Springs
● Washers
● Clips
● Surgical parts
● Blades
● Bellows
● Honeycomb
DESCRIPTION
Type 17-7PH® Precipitation Hardening Alloy is a semi-austenitic stainless steel which is austenitic in the annealed condition, but martensitic in the hardened condition. Type 17-7PH® provides high strength and hardness, excellent fatigue properties, good corrosion resistance and minimum distortion upon heat treatment. It is easily formed in the annealed condition, then hardened to high strength levels by simple heat treatments to Conditions RH 950 and TH 1050. The exceptionally high strength of Condition CH 900 offers many advantages where limited ductility and workability are permissible. In its heat treated condition, this alloy provides exceptional mechanical properties at temperatures up to 900 °F (482 °C).
CHEMISTRY TYPICAL
| Carbon | 0.090 max |
| Manganese | 1.00 max |
| Silicon | 1.00 max |
| Chromium | 16.00- 18.00 |
| Nickel | 6.50- 7.75 |
| Aluminum | 0.75-1.50 |
| Phosphorus | 0.040 max |
| Sulfur | 0.030 max |
| Iron | Balance |
PHYSICAL PROPERTIES
| Density | (Cond. A): 0.282 lbs/in3 7.80 g/cm3 |
| Electrical Resistivity | (microhm-cm) (all conditions): 60 °F (20 °C): 80 |
| Thermal Conductivity | BTU/hr/ft2/ft/°F (W/m•K) |
| At 300 °F (149 °C) | 9.5 (16.5) |
| Mean Coefficient of Thermal Expansion | in/inl°F (µm/m•K): (Cond. A): |
| 70 -200 °F (21 -93 °C) | 8.5 x 10-5 (15.3) |
| 70 -400 °F (21 -204 °C) | 9.0 x 10-5 (16.2) |
| 70 -600 °F (21 -315 °C) | 9.5 x 10-5 (17.1) |
| 70 -800 °F (21 -427 °C) | 9.6 x 1 o-6 (16.0) |
| Modulus of Elasticity | ksi (MPa) |
| 29 x 103 (200 x 103) in tension | |
| Magnetic Permeability | |
| Annealed | Weakly ferromagnetic |
| Heat treated | Strongly ferromagnetic |
FORMS
Strip Coil
● 17-7PH Stainless Steel Strip
● 17-7PH Stainless Steel Foil
● 17-7PH Stainless Steel Ribbon
Wire Products
● 17-7PH Stainless Steel Shaped Wire & Profile Wire
● 17-7PH Stainless Steel Round Wire
● 17-7PH Stainless Steel Flat Wire
● 17-7PH Stainless Steel Square Wire
MECHANICAL PROPERTIES AT ROOM TEMPERATURE PROPERTIES OF 17-7PH IN THE ANNEALED CONDITION
| Gauge Range | <.010 inches |
| Ultimate Tensile Strength | 150 KSI max (1035 MPa max) |
| Yield Strength (0.2% offset) | 65 KSI max (450 MPa max) |
| Elongation | Consult Ulbrich Technical Services |
| Gauge Range | > .010 inches |
| Ultimate Tensile Strength | 150 KSI max (1035 MPa max) |
| Yield Strength (0.2% offset) | 55 KSI max (380 MPa max) |
| Elongation | 20% min |
| Hardness | Rb 92 max |
| Typical Condition | C |
| Ultimate Tensile Strength | 200 KSI min (1380 MPa min) |
| Yield Strength (0.2% offset) | 175 KSI min (1205 MPa min) |
| Elongation | 1 % min |
| Hardness | Re 41 min (aim) |
ADDITIONAL ROLLED TEMPERS:
Consult Ulbrich Technical Services if tempers other than Condition C are required.
HEAT TREATMENT OF 17-7PH STAINLESS STEEL
TH 1050 Typical
| Ultimate Tensile Strength | 180 KSI min (1240 MPa min) |
| Yield Strength | (0.2% Offset) 150 KSI min (1034 MPa min) |
| Elongation | Consult Ulbrich Technical Services |
| Hardness | Re 38 min |
RH950 Typical
| Ultimate Tensile Strength | 210 KSI min (1450 MPa min) |
| Yield Strength | (0.2 Offset) 190 KSI min (1310 MPa min) |
| Elongation | Consult Ulbrich Technical Services |
| Hardness | Re 44 min |
CH900 Typical
| Ultimate Tensile Strength | 240 KSI min (1655 MPa min) |
| Yield Strength | (0.2% Offset) 230 KSI min (1586 MPa min) |
| Elongation | 1 % min |
| Hardness | Re 46 min (aim) |
ADDITIONAL PROPERTIES CORROSION RESISTANCE OF 17-7PH STAINLESS STEEL
Refer to NACE (National Association of Corrosion Engineers) for recommendations.