Are SS430 10Cr17 1.4016 the same?
Are SS430, 10Cr17, and 1.4016 the Same? | Stainless Steel Grade Comparison
Introduction
When sourcing stainless steel globally, you may encounter multiple grade names for what seems like the same material. A common question in international procurement is: Are SS430, 10Cr17, and 1.4016 the same stainless steel?
The short answer is: Yes, these are equivalent designations for the same grade of ferritic stainless steel, but defined under different national or regional standards. This article helps you understand the equivalence, chemical composition, properties, and application scenarios of these grades-critical knowledge for engineers, buyers, and material specifiers.
430 SS Equivalent Grades Reference
| Region | Standard | Grade Designation |
| USA | ASTM A240 / A268 | AISI 430 / UNS S43000 |
| China | GB/T 3280 / GB/T 1220 | 10Cr17 (formerly 1Cr17) |
| Europe | EN 10088 | 1.4016 (X6Cr17) |
| Japan | JIS G4305 | SUS430 |
Chemical Composition Comparison (Weight %)
| Grade | Carbon (C) | Chromium (Cr) | Manganese (Mn) | Silicon (Si) | Phosphorus (P) | Sulfur (S) |
| AISI 430 | 0.12 max | 16.0 – 18.0 | 1.00 max | 1.00 max | 0.040 max | 0.030 max |
| 10Cr17 | 0.12 max | 16.0 – 18.0 | 1.00 max | 1.00 max | 0.040 max | 0.030 max |
| 1.4016 | 0.08 max | 16.0 – 18.0 | 1.00 max | 1.00 max | 0.040 max | 0.015 max |
Note: European 1.4016 typically specifies a tighter carbon and sulfur limit for improved quality.
Mechanical Properties (Annealed Condition)
| Property | AISI 430 | 10Cr17 | 1.4016 |
| Tensile Strength (min) | 450 MPa | 450 MPa | 400 – 630 MPa |
| Yield Strength 0.2% (min) | 205 MPa | 205 MPa | 240 – 260 MPa |
| Elongation (min) | 22% | 22% | 18 – 20% |
| Hardness (max) | 89 HRB | 183 HBW | 185 HBW |
Physical Properties
| Property | Value |
| Density | 7.75 g/cm³ |
| Magnetic Permeability | Magnetic (in all conditions) |
| Melting Range | 1425 – 1510°C |
| Specific Heat | 460 J/kg·K (0-100°C) |
| Thermal Conductivity | 26.3 W/m·K (at 100°C) |
| Modulus of Elasticity | 200 GPa |
| Coefficient of Expansion | 10.4 µm/m·°C (0-100°C) |
What is the corrosion resistance of 430 stainless steel?
Grade 430 stainless steel provides good corrosion resistance in mild, non-aggressive environments, resisting atmospheric conditions, fresh water, and certain organic or nitric acids. However, it lacks significant nickel, making it prone to pitting in saltwater and chloride environments compared to grade 304.
Oxidation resistance of 430 stainless steel
exhibits good oxidation resistance up to a maximum continuous temperature of 815°C (1500°F) and up to 870°C (1600°F) for intermittent service. Its oxidation properties are driven primarily by its 16% to 18% chromium content, which facilitates the formation of a protective, self-healing chromium oxide (Cr₂O₃) scale on its surface.
Weldability of 430 stainless steel
Grade 430 stainless steel has fair to moderate weldability. As a ferritic, straight-chromium alloy, it can be fusion and resistance welded, but high heat input causes significant grain growth in the heat-affected zone (HAZ), leading to reduced toughness and brittleness.
Is 1.4016 stainless steel magnetic?
Yes, 1.4016 stainless steel (also known as AISI 430 or X6Cr17) is strongly magnetic, featuring a ferromagnetic body-centered cubic (BCC) crystal structure; magnets will adhere firmly to its surface regardless of whether it has undergone annealing, forming, cold rolling, or welding.
SS430, 10Cr17 Stainless Steel Applications
Appliance Industry: Dishwasher liners, refrigerator cabinet panels, microwave oven linings, stove trim rings.
Automotive: Decorative trim, molding, exhaust system components (cold-end).
Architecture: Interior decorative panels, elevator interiors, bank vaults.
Kitchenware: Tabletop equipment, flatware, sinks, hollowware.
Industrial: Nitric acid plant equipment, oil refinery heat exchanger tubes, combustion chambers.
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