17Cr Stainless Steel refers to a category of ferritic stainless steels containing approximately 16–18% chromium, offering good corrosion resistance, high oxidation resistance, and excellent thermal stability. With low carbon content and stable ferritic structure, 17Cr steels are widely used in automotive exhaust systems, household appliances, heat-resistant components, and decorative parts.
This material is cost-effective, easy to fabricate, and suitable for large-volume industrial applications.
Keywords: 17Cr stainless steel, 17% chromium stainless steel, ferritic stainless steel, 430 stainless steel equivalent, Cr17 steel strip, Cr17 stainless steel sheet
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Common Grades in the "17Cr" Category
17Cr stainless steel is not a single grade-it refers to a family of ferritic stainless steels with ~17% Cr. Common equivalent/harmonized grades include:
| Standard | Grade |
|---|---|
| ASTM / AISI | 430 |
| JIS | SUS 430 |
| EN / DIN | 1.4016 |
| GB | 10Cr17, 12Cr17, 17Cr series |
When customers say "17Cr stainless steel", they usually mean AISI 430 / SUS 430 / 1.4016.
Chemical Composition (Typical)
(Based on AISI 430 / 1.4016 as a representative 17Cr grade)
| Element | Content (%) |
|---|---|
| C | ≤ 0.12 |
| Cr | 16.0 – 18.0 |
| Mn | ≤ 1.00 |
| Si | ≤ 1.00 |
| P | ≤ 0.040 |
| S | ≤ 0.030 |
| Ni | ~0 (Very low) |
Available Specifications
| Product Form | Thickness / Diameter | Width | Length | Tolerance | Notes |
|---|---|---|---|---|---|
| Sheet / Plate | 0.5 – 20 mm | 100 – 2000 mm | 1000 – 6000 mm | ±0.1 – ±0.5 mm | Cold & hot rolled |
| Coil | 0.5 – 8 mm | 600 – 1500 mm | Coiled | ±0.1 mm | Cold rolled |
| Strip | 0.3 – 3 mm | 10 – 500 mm | Coiled | ±0.05 mm | Polished/Brushed |
| Bar / Rod | 5 – 200 mm | – | Cut-to-length | ±0.2 mm | Round, Square, Hex |
| Tube / Pipe | 10 – 150 mm OD | – | Cut-to-length | ±0.3 mm | Seamless & Welded |
Key Features
✔ Good corrosion resistance in atmospheric & mild chemical environments
✔ Excellent oxidation resistance up to 815°C
✔ Low cost due to minimal nickel content
✔ Good thermal conductivity
✔ Favorable for stamping, bending, and deep drawing
✔ Magnetic (ferritic structure)
✔ Stable mechanical properties at elevated temperatures
Products Applications
Automotive: exhaust systems, heat shields, trim parts
Home Appliances: washing machine drums, kitchen equipment, microwave interiors
Industrial: heat exchangers, furnace parts, tanks
Architecture: interior decorative panels, elevator panels
General Fabrication: stamped parts, deep-drawn parts, formed components
Available Product Forms
Sheets
Plates
Coils (Hot Rolled / Cold Rolled)
Strips (Slit Edge / Precision Strip)
Tubes (Decorative / Heat-resistant tubing)
Bars / Profiles (upon request)
Inspection & Quality Assurance
Material Certification: EN 10204 3.1 / 3.2 or equivalent.
Surface Inspection: Visual and dimensional inspection before shipment.
Mechanical Testing: Hardness, tensile strength, and elongation tested.
Third-Party Verification: Optional SGS, TUV, or Bureau Veritas certification.
Ready to source high-quality 17Cr stainless steel for your projects? Our team is here to provide custom sizes, technical support, and fast delivery worldwide.
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FAQ
Q1: What are the mechanical properties of 17Cr stainless steel?
A1: Typical mechanical properties (after heat treatment) include:
Tensile Strength: 700–900 MPa
Yield Strength: 450–650 MPa
Elongation: 10–15%
Hardness: 50–55 HRC
These properties make it suitable for cutting tools, shafts, and wear-resistant components.
Q2: What heat treatment processes are recommended for 17Cr stainless steel?
A2: The most common processes are:
Austenitizing: 980–1050°C for homogenization.
Quenching: Oil or air quench depending on section size.
Tempering: 150–300°C to achieve desired hardness and toughness.
Proper heat treatment optimizes wear resistance and machinability.
Q3: How does 17Cr stainless steel perform in corrosion resistance?
A3: Being a high-chromium martensitic stainless steel, it has moderate corrosion resistance. It performs well in mild environments (e.g., dry indoor air or low-moisture industrial applications) but is not recommended for marine or highly acidic conditions without protective coating.
Q4: Is 17Cr stainless steel suitable for precision machining?
A4: Yes. With proper tempering, it offers good machinability. Recommended cutting fluids and tooling should be used to avoid work hardening and tool wear.
Q5: Can 17Cr stainless steel be welded, and what precautions are needed?
A5: Welding is possible but requires:
Preheating to 150–200°C to reduce cracking risk.
Post-weld tempering to restore hardness and reduce brittleness.
Use of matching filler materials to maintain corrosion resistance.
Q6: What are the typical industrial applications?
A6: Applications include:
Cutting tools and knives
Shafts, pins, and fasteners
Wear-resistant industrial components
Automotive parts exposed to moderate stress
Q7: What standards and certifications are available for 17Cr stainless steel?
A7: Supplied according to ASTM, JIS, DIN, or customer-specified standards. Material test certificates (3.1/3.2) and third-party verification (SGS, TUV, BV) are available upon request.
Q8: How do I choose between 17Cr and other martensitic stainless steels like 420 or 440C?
A8: Key considerations:
17Cr: Moderate hardness, good wear resistance, cost-effective for industrial tooling.
420: Lower cost, lower hardness, suitable for decorative or low-wear parts.
440C: Higher hardness and wear resistance, ideal for high-performance cutting tools.
Q9: Can 17Cr stainless steel be used in high-temperature environments?
A9: Continuous service temperature should not exceed ~350°C. Above this, hardness and corrosion resistance may degrade.
Q10: Can custom sizes and surface finishes be supplied?
A10: Yes. We provide cut-to-length sheets, plates, bars, rods, and tubes, as well as polished, brushed, or ground finishes to meet client specifications.
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