Baojing Steel supplies high-performance Precipitation Hardening (PH) Stainless Steel Coils designed for applications requiring an excellent combination of high strength, hardness, corrosion resistance and dimensional stability.
Precipitation hardening stainless steels can achieve enhanced mechanical properties through controlled solution treatment, aging and precipitation hardening. Depending on the grade and heat-treatment condition, PH stainless steels can provide a wide range of strength and hardness levels while maintaining good corrosion resistance.
Our main PH stainless steel grades include 17-4 PH, 15-5 PH, 13-8 Mo and 17-7 PH, available in customized thicknesses, widths, surface finishes and heat-treatment conditions.
These materials are widely used in aerospace, oil & gas, petrochemical, chemical processing, power generation, automotive, marine, medical equipment, precision engineering and high-strength industrial components.
| Item | Specification |
|---|---|
| Product | Precipitation Hardening Stainless Steel Coil |
| Material Type | Precipitation Hardening Stainless Steel / PH Stainless Steel |
| Main Grades | 17-4 PH / 15-5 PH / 13-8 Mo / 17-7 PH |
| Common UNS | S17400 / S15500 / S13800 / S17700 |
| Product Forms | Coil / Sheet / Strip / Plate |
| Production Process | Cold Rolled / Hot Rolled |
| Heat Treatment | Solution Treated / Aged / Precipitation Hardened |
| Main Standards | ASTM / ASME / AMS / UNS / EN / JIS |
| ASTM References | ASTM A693 / A564 / A705, depending on product form and grade |
| Surface Finish | 2B / BA / No.1 / No.4 / Customized |
| Edge | Mill Edge / Slit Edge |
| Thickness | Customized |
| Width | Customized / Slit Width |
| Coil ID | Customized |
| Coil Weight | Customized |
| Packing | Standard Export Seaworthy Packing |
| Inspection | Mill Inspection / Third-Party Inspection |
| Certificate | EN 10204 3.1 / MTC |
| Applications | Aerospace / Oil & Gas / Energy / Chemical / Automotive / Medical / Engineering |
| Grade | UNS | Type | Key Characteristics | Typical Applications |
|---|---|---|---|---|
| 17-4 PH | S17400 | Martensitic PH | High strength, good corrosion resistance, excellent heat treatability | Aerospace, oil & gas, valves, pumps, shafts |
| 15-5 PH | S15500 | Martensitic PH | High strength, good toughness and corrosion resistance | Aerospace, chemical, petrochemical |
| 13-8 Mo | S13800 | Martensitic PH | High strength, toughness and stress corrosion resistance | Aerospace, high-strength components |
| 17-7 PH | S17700 | Semi-austenitic PH | High strength, good fatigue resistance and corrosion resistance | Aerospace, springs, washers, precision components |
17-4 PH / UNS S17400 is one of the most widely used precipitation hardening stainless steels, offering an excellent combination of strength, hardness, corrosion resistance and machinability.
| Grade | UNS | C Max. | Si Max. | Mn Max. | P Max. | S Max. | Cr % | Ni % | Mo % | Cu % | Nb / Ti |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 17-4 PH | S17400 | 0.07 | 1.00 | 1.00 | 0.040 | 0.030 | 15.0–17.5 | 3.0–5.0 | — | 3.0–5.0 | Nb + Ta 0.15–0.45 |
| 15-5 PH | S15500 | 0.07 | 1.00 | 1.00 | 0.040 | 0.030 | 14.0–15.5 | 3.5–5.5 | — | 2.5–4.5 | Nb + Ta 0.15–0.45 |
| 13-8 Mo | S13800 | 0.05 | 1.00 | 1.00 | 0.040 | 0.008 | 12.25–13.25 | 7.5–8.5 | 2.0–2.5 | 0.50 | Al 0.90–1.35 |
| 17-7 PH | S17700 | 0.09 | 1.00 | 1.00 | 0.040 | 0.040 | 16.0–18.0 | 6.5–7.75 | — | ≤0.50 | Al 0.75–1.50 |
Exact chemical composition depends on the applicable grade and product standard. The relevant ASTM/AMS/ASME specification should always be confirmed for commercial orders.
PH stainless steel is different from conventional stainless steel because its mechanical properties depend heavily on the aging condition.
| Condition | Description | Typical Characteristics |
|---|---|---|
| H900 | Solution treated + aged at 900°F | Very high strength and hardness |
| H925 | Solution treated + aged at 925°F | High strength with improved toughness |
| H1025 | Solution treated + aged at 1025°F | Balanced strength and toughness |
| H1075 | Solution treated + aged at 1075°F | Improved toughness and ductility |
| H1150 | Solution treated + aged at 1150°F | Higher toughness and ductility |
For website purposes, you can display the key mechanical properties like this:
| Grade / Condition | Tensile Strength | Yield Strength | Elongation | Hardness |
|---|---|---|---|---|
| 17-4 PH H900 | Very High | Very High | Moderate | High |
| 17-4 PH H1025 | High | High | Improved | High |
| 17-4 PH H1150 | High | High | Higher | Moderate |
| 15-5 PH | High | High | Good | High |
| 13-8 Mo | Very High | Very High | Good | High |
| 17-7 PH | High | High | Good | High |
Technical Note: Actual mechanical properties vary according to grade, thickness, product form and heat-treatment condition. MTC values and the applicable ASTM/AMS specification shall prevail.
Heat treatment is one of the most important characteristics of PH stainless steel.
| Process | Description |
|---|---|
| Solution Treatment | Dissolves alloying elements and prepares the material for precipitation hardening |
| Quenching / Cooling | Produces the required metallurgical condition after solution treatment |
| Aging | Controlled heating promotes precipitation of strengthening phases |
| Precipitation Hardening | Increases strength and hardness through controlled precipitation |
| H900 / H925 / H1025 / H1075 / H1150 | Common aging conditions for 17-4 PH |
PH stainless steels can achieve very high tensile and yield strengths after suitable heat treatment.
High mechanical strength allows PH stainless steels to be used for demanding structural and mechanical components.
17-4 PH and other PH grades provide good corrosion resistance for many industrial environments.
Controlled precipitation hardening can significantly increase hardness and resistance to mechanical wear.
PH stainless steel can achieve high strength with relatively controlled dimensional changes during appropriate heat treatment.
Many PH grades can be machined and fabricated in suitable solution-treated conditions before final aging.
| Industry | Applications |
|---|---|
| Aerospace | Structural components, landing gear parts, shafts, fasteners |
| Oil & Gas | Valves, pumps, shafts, downhole components |
| Petrochemical | High-strength equipment and components |
| Chemical Processing | Pumps, valves, mechanical components |
| Power Generation | Turbine components, shafts, high-strength parts |
| Automotive | High-strength mechanical components |
| Marine | Shafts, fittings, structural components |
| Medical | Surgical and precision instruments |
| Mechanical Engineering | Gears, shafts, fasteners, precision components |
| Tooling | Dies, molds and high-strength tooling components |
| Spring Manufacturing | Springs, washers and elastic components |
| Surface | Description | Typical Applications |
|---|---|---|
| 2B | Smooth cold rolled surface | Industrial applications |
| BA | Bright Annealed surface | Precision and decorative applications |
| No.1 | Hot rolled, annealed and pickled | Heavy industrial applications |
| No.4 | Brushed / satin finish | Decorative and architectural applications |
| HL | Hairline finish | Architectural applications |
| Customized | Special surface according to customer requirements | Precision / special applications |
| Standard System | Typical Standards / Designations |
|---|---|
| ASTM | ASTM A693 / A564 / A705, depending on product form |
| ASME | Applicable ASME specifications |
| AMS | Applicable AMS aerospace material specifications |
| UNS | S17400 / S15500 / S13800 / S17700 |
| EN | Applicable EN 10088 series |
| JIS | Applicable JIS PH stainless steel specifications |
| GB/T | Applicable GB/T stainless steel specifications |
| Product Category | Common HS Code Reference |
|---|---|
| Precipitation Hardening Stainless Steel Coil | HS 7219 |
| Cold Rolled PH Stainless Steel Coil | HS 7219 |
| Hot Rolled PH Stainless Steel Coil | HS 7219 |
| Stainless Steel Strip ≤600 mm | HS 7220 |
| PH Stainless Steel Slit Coil | HS 7220 |
| PH Stainless Steel Strip Coil | HS 7220 |
Note: The final HS classification should be confirmed according to product width, thickness, form, manufacturing process, grade and destination-country customs regulations.
Precipitation Hardening Stainless Steel Coil Manufacturer & Supplier
Baojing Steel supplies high-performance Precipitation Hardening Stainless Steel Coils in 17-4 PH, 15-5 PH, 13-8 Mo and 17-7 PH grades. Available in cold rolled and hot rolled conditions with customized thicknesses, widths, surface finishes and heat-treatment conditions. PH stainless steel combines high strength, hardness, corrosion resistance and dimensional stability for aerospace, oil & gas, petrochemical, power generation, marine, medical and precision engineering applications.
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