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17-4PH (1.4542) is a precipitation-hardenable stainless steel. There are various heat treatment processes available to 17-4PH and, depending on the process used, a maximum hardness of 44HRC can be achieved. It combines high strength and toughness with excellent corrosion resistance and good machinability.
Material can be certified to ASTM F899 making it suitable for a wide range of surgical instruments, cutting tools, rasps, medical screwdrivers and dental instruments such as burs. It is suitable for both polishing and magetising and shows good weldability with all electric welding methods.
Heat Treatment
Solution Heat Treatment : 1900 ̊F (+/-25 ̊F) followed by water, oil or air cool (time comensurate with the size of the part)
Precipitation Treatment : Temperature 900 - 1150̊F (depending on the H temper required), holding for 4 hours, followed by air cool
Typical Chemical Composition
| C | Si | Mn | P | S | Cr | Mo | Ni | Nb | Cu | Fe | |
| Min | 15.00 | 3.00 | 3.00 | ||||||||
| Max | 0.07 | 0.07 | 1.50 | 0.040 | 0.015 | 17.00 | 0.60 | 5.00 | 0.45 (5xC) | 5.00 | Balance |
Typical Mechanical Properties
| Heat Treatment Condition |
Tensile Strength MPA (min) |
Yield Strength MPA (min) |
Elongation % in 2D (min) |
Reduction of area% (min) |
Hardness HRC (min) |
| H1150 | 930 | 725 | 16 | 50 | 28 |
| H1100 | 965 | 795 | 14 | 45 | 31 |
| H1075 | 1000 | 860 | 13 | 45 | 32 |
| H1025 | 1070 | 1000 | 12 | 45 | 35 |
| H925 | 1170 | 1070 | 10 | 44 | 38 |
| H900 | 1310 | 1170 | 10 | 40 | 40 |
| Sol Treated | 38 (max) |
Specifications
1.4542
EN / DIN X5CrNiCuNb 16-4
ASTM F899
AISI 630
JIS SUS 630
UNS S17400
Availability
Stainless Steel 630 / 17-4PH (1.4542) is readily available in precision ground bar and wire starting from 1.00mm diameter up to 50mm.
Disclaimer : Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.
