17-4PH Stainless Steel Round Bar 630 Stainless Steel Bar Hot Rolled
Solid Solution Finishing
Technical Data Sheet
17-4 PH is a martensitic, precipitation-hardening stainless steel
that provides an outstanding combination of high strength and
hardness along with excellent corrosion resistance. 17-4 PH has
good fabricating characteristics and can be age hardened by a
single step, low temperature treatment. 17-4 PH is a versatile
material widely used in the aerospace, chemical, petrochemical,
food processing, paper and general metalworking industries.
| Chemical Composition Limits |
| Weight% | C | Si | Mn | P + S max | Cr | Ni | Cb + Ta | Cu |
| AMS 5643 | 0.07 | 1.0 max | 1.0 max | 0.04 P
0.03 S | 15.0 - 17.5 | 3.0 - 5.0 | 5 X C / 0.45 | 3.0 - 5.0 |
| AISI 630 | 0.07 | 1.0 max | 1.0 max | 0.04P
0.03 S | 15.0 - 17.5 | 3.0 -5.0 | 0.15 - 0.45 | 3.0 - 5.0 |
Typical Mechanical Properties
| Material | Condition | Ultimate Tensile Strength (ksi) | 0.2 % Yield Strength (ksi) | Elongation % in 2D | % Reduction of Area | Rockwell C Hardness |
Alloy 17-4 PH
Bar AMS 5643 | Cond A | - | - | - | - | 363 HB max |
Alloy 17-4 PH
Bar AMS 5643 | H900 | 190 | 170 | 10 | 40 | 388-444 |
Alloy 17-4 PH
Bar AMS 5643 | H925 | 170 | 155 | 10 | 44 | 375-429 |
Alloy 17-4 PH
Bar AMS 5643 | H1025 | 155 | 145 | 12 | 45 | 331-401 |
Alloy 17-4 PH
Bar AMS 5643 | H1075 | 145 | 125 | 13 | 44 | 311-375 |
Alloy 17-4 PH
Bar AMS 5643 | H1100 | 140 | 115 | 14 | 45 | 302-363 |
Alloy 17-4 PH
Bar AMS 5643 | H1150 | 135 | 105 | 16 | 50 | 277-352 |
| Material | Condition | Ultimate Tensile Strength (ksi) | 0.2 % Yield Strength (ksi) | Elongation % in 2D (Values are for sheet <0.1874" thick) | % Reduction of Area | Rockwell C Hardness |
Alloy 17-4PH
Sheet/Plate AMS 5604 | Cond A | - | - | - | - | 38 max |
Alloy 17-4PH
Sheet/Plate AMS 5604 | H900 | 190 | 170 | 5 | - | 40-47 |
Alloy 17-4PH
Sheet/Plate AMS 5604 | H925 | 170 | 155 | 5 | - | 38-45 |
Alloy 17-4PH
Sheet/Plate AMS 5604 | H1025 | 155 | 145 | 5 | - | 35-42 |
Alloy 17-4PH
Sheet/Plate AMS 5604 | H1075 | 145 | 125 | 5 | - | 33-39 |
Alloy 17-4PH
Sheet/Plate AMS 5604 | H1100 | 140 | 115 | 5 | - | 32-38 |
Alloy 17-4PH
Sheet/Plate AMS 5604 | H1150 | 135 | 105 | 8 | - | 28-37 |
17-4PH is a widely-used martensitic precipitation-hardening
stainless steel with a high concentration of chromium and nickel.
It has many favorable properties, including excellent strength,
good corrosion resistance, and excellent mechanical properties up
to 600 °F (316 °C).
The alloy also possesses good toughness when welded, while short
low-temperature heat treatments reduce warping and scaling.
Additionally, 17-4PH is easy to machine and fabricate.
Thanks to the beneficial properties, 17-4PH finds use in various
industries. Typical parts include mechanical seals, oil patch, and
pump shafts.
Furthermore, the alloy also finds use in the aerospace industry,
petroleum industry, and chemical industry, food processing
equipment, paper and pulp industry, nuclear waste processing and
storage, and general metalworking.
Tech Steel & Materials offers Stainless Steel 17-4PH in two
sub-type specifications and multiple shapes/forms:
- AMS 5604 (Plate, Sheet, and Strip)
- AMS 5643 (Bar, Forging, Ring, Tubing, and Wire)
