Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of X17CrNi13-7 Stainless Steel | 17-7 PH Sheet Plate Coil Strip Supplier in China, also supports customized service. With abundant experience, we warmly welcome you to wholesale cheap products in stock here and get free sample from our factory. For price consultation, contact us.
X17CrNi13-7 is a martensitic chromium–nickel stainless steel offering a balance of high mechanical strength, good hardenability, strong wear resistance, and moderate corrosion resistance. It is widely used for pump shafts, precision mechanical parts, turbine components, valves, and structural elements requiring both strength and toughness.
We supply sheet, plate, bar, forging, and custom-machined parts, backed by EN/DIN standards, global export service, and full material certification.
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What is X17CrNi13-7 Stainless Steel?
X17CrNi13-7 stainless steel, also known as 17-7 PH stainless steel, is a precipitation hardening stainless steel designed for applications requiring extremely high strength, excellent fatigue resistance, and moderate corrosion resistance.
The alloy contains chromium, nickel, and aluminum, enabling superior mechanical performance after heat treatment. Compared with conventional 304 or 316 stainless steel, X17CrNi13-7 offers significantly higher tensile strength and elastic properties, making it ideal for aerospace springs, diaphragms, precision washers, and structural components.
X17CrNi13-7 Stainless Steel
| Item | Details |
|---|---|
| Product Name | X17CrNi13-7 Stainless Steel |
| Equivalent Grade | 17-7 PH / 1.4568 |
| Material Type | Precipitation Hardening Stainless Steel |
| Forms | Sheet / Plate / Coil / Strip / Bar / Wire / Tube |
| Standards | ASTM A693 / AMS 5528 / EN 10088 |
| Surface Finish | 2B / BA / NO.1 / HL / Polished |
| Thickness | 0.1mm – 100mm |
| Width | 10mm – 2000mm |
| Features | High Strength / Fatigue Resistance / Heat Treatable / Corrosion Resistant |
| Applications | Aerospace / Springs / Fasteners / Chemical Equipment / Heat Exchangers |
Chemical Composition (Typical %)
| Element | Content (%) |
|---|---|
| C | 0.15 – 0.20 |
| Cr | 12.5 – 14.0 |
| Ni | 6.5 – 7.5 |
| Mn | ≤ 1.5 |
| Si | ≤ 1.0 |
| P | ≤ 0.04 |
| S | ≤ 0.03 |
| Fe | Balance |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength (Rm) | 750 – 1050 MPa |
| Yield Strength (Rp0.2) | ≥ 600 MPa |
| Elongation (A5) | ≥ 12% |
| Hardness | 230 – 290 HB |
| Impact Toughness | Good (optimized for mechanical load parts) |
Available Specifications (Metric + Imperial)
Sheets / Plates
| Thickness | Thickness (inch) | Width | Length | Tolerance |
|---|---|---|---|---|
| 1–80 mm | 0.039–3.15" | 600–2500 mm | 1000–8000 mm | EN ISO standard |
Round Bar
| Diameter | Diameter (inch) | Length | Condition |
|---|---|---|---|
| 8–500 mm | 0.31–20" | 2000–6000 mm | Annealed / QT |
Forged Blocks
| Size | Imperial | Condition |
|---|---|---|
| 80–800 mm | 3–32" | Forged / Rough Machined / Finished Machined |
Pipes / Tubes
| OD | OD (inch) | Wall Thickness | WT (inch) | Type |
|---|---|---|---|---|
| 10–630 mm | 0.4–25" | 1–40 mm | 0.04–1.6" | Seamless / Welded |
Key Features & Benefits
High tensile and yield strength after heat treatment
Strong wear resistance & good surface finish
Moderate corrosion resistance vs carbon steel
Good hardenability and dimensional stability
Suitable for parts requiring both strength & toughness
Good machinability in tempered condition
Applications of X17CrNi13-7 Stainless Steel
Aerospace Industry
Used for aircraft structural parts, spring components, diaphragms, and precision fasteners requiring high fatigue resistance.
Industrial Springs
Widely used in high-performance springs, retaining rings, washers, and elastic components.
Chemical Processing
Suitable for moderate corrosion-resistant environments in chemical and petrochemical industries.
Heat Exchangers
Offers excellent dimensional stability and mechanical strength under temperature fluctuation.
Precision Components
Used in valves, sensors, bellows, and precision mechanical assemblies.
Heat Treatment Guide
| Process | Temperature | Note |
|---|---|---|
| Annealing | 750–850°C | Slow cooling |
| Hardening | 950–1050°C | Oil or air quench |
| Tempering | 200–400°C | Adjust hardness and toughness |
| Stress Relief | 550–650°C | After machining |
X17CrNi13-7 vs 304 vs 316 Stainless Steel
| Feature | X17CrNi13-7 (17-7 PH) | 304 Stainless Steel | 316 Stainless Steel |
|---|---|---|---|
| Type | PH Stainless Steel | Austenitic | Austenitic |
| Strength | Very High | Medium | Medium |
| Heat Treatable | Yes | No | No |
| Fatigue Resistance | Excellent | Moderate | Moderate |
| Corrosion Resistance | Good | Very Good | Excellent |
| Spring Applications | Excellent | Poor | Poor |
| Aerospace Use | Widely Used | Limited | Limited |
| Cost | Higher | Lower | Higher |
Inspection & Quality Assurance
100% chemistry analysis
Mechanical property testing (Rm, Rp0.2, hardness)
Ultrasonic inspection UT Level 2/3
Straightness & dimensional inspection
Surface defect examination
EN 10204 3.1 / 3.2 certificate available
Third-party inspections: SGS / TUV / BV / Intertek
Product Delivery Standards
| Item | Standard |
|---|---|
| Material Standard | ASTM A693 / AMS 5528 / EN 10088 |
| Supply Condition | Annealed / Cold Rolled / Hardened |
| Surface Finish | 2B / BA / NO.1 / HL |
| Edge Condition | Mill Edge / Slit Edge |
| Packaging | Export Standard Seaworthy Package |
| Certificate | EN 10204 3.1 / MTC |
We deliver X17CrNi13-7 stainless steel with stable quality, competitive price, and fast global delivery.
Contact our team for quick quotations, technical data, and OEM machining services tailored to your application.
Our address
Room 4107, Runfeng Building, Sanqiao New Street, Weiyang District, Xi'an City, Shaanxi Province
Phone Number
+86 15769214734
Professional FAQ – X17CrNi13-7
Q1: What type of stainless steel is X17CrNi13-7?
A: It is a martensitic Cr-Ni stainless steel, offering high strength and moderate corrosion resistance.
Q2: What is the hardness after heat treatment?
A: Typically 230–290 HB, depending on tempering temperature.
Q3: Is X17CrNi13-7 magnetic?
A: Yes. It remains fully magnetic after heat treatment.
Q4: What are the equivalent grades?
A: There is no direct AISI equivalent, but it is similar to high-strength martensitic steels in the 12–14% Cr range.
Q5: Is the material weldable?
A: Weldability is limited. Preheating and post-weld tempering are required to avoid cracking.
Q6: What are common supply conditions?
A: Annealed, QT800–QT1000, forged, and machined-to-drawing.
Q7: What certificate do you provide?
A: EN 10204 3.1 / 3.2 MTC, plus optional SGS/TUV/BV inspection reports.
Q8: Do you offer cutting, machining, and OEM custom parts?
A: Yes. Bars, plates, and forgings can be customized to drawings for global OEM customers.
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