Alloy 17-4 PH precipitation hardening stainless steel (S17400), ATI 17-4 is a chromium-nickel-copper precipitation hardening stainless steel used for applications requiring high strength and a moderate level of corrosion resistance. High strength is maintained to approximately 600°F (316°C). This alloy is designated Grade or Type 630 in several specifications.
Alloy 17-4 PH Material Applications.
• Fracture fixation devices
• Bone plates
• Trauma nails
• Bone screws
• Surgical instruments
• Surgical implant devices
• Orthopedic implants
• Trauma nails
• Neurological applications
• Surgical instruments
• Chromatography columns
Alloy 17-4 PH Specifications
• UNS S17400
• AMS 5604
• ASTM A 693
• ASTM A 564
• ASTM F 899
• ASME SA 693
Alloy 17-4 PH Material Available Forms.
Coil
• Sheet
• Strip
• Foil
Wire
• Profile (Shaped Wire)
• Round
• Flat
HEAT TREATMENT TYPE 1
Heat Treatment according to
ASTM A564/A564M – 13 UNS S17400:
solution annealing + age hardening (H900)
HEAT TREATMENT TYPE 1
Heat Treatment according to
ASTM A564/A564M –13 UNS S17400:
age hardening (H1150)
| Condition | Tensile (psi) Strength | Yield (psi) Strength | Elongation (% in 2in.) |
Reduction of Area (%) | Hardness Brinell | Hardness Rockwell (Rc) |
| H900 | 190,000 | 170,000 | 10 | 40 | 388 | 40 |
| H1025 | 155,000 | 145,000 | 12 | 45 | 331 | 35 |
| H1075 | 145,000 | 125,000 | 13 | 45 | 311 | 32 |
| H1150 | 135,000 | 105,000 | 16 | 50 | 277 | 28 |
| H1150-M | 115,000 | 75,000 | 18 | 55 | 255 | 24 |
| H1150-D | 125,000 | elongation A | ≥ 10% | 50 | 255-311 | 24-33 |
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