SUSXM15J1 Stainless Steel
SUSXM15J1 Austenitic Stainless Steel: Deep-Drawing & Corrosion Resistance Data Sheet
Comprehensive technical data for SUSXM15J1 stainless steel according to JIS G4304/G4305. Chemical composition, mechanical & physical properties, equivalent grades, and application insights for cold forming and corrosion-resistant parts.
Deep drawing, spinning, cold heading, stamping, bending, welding (with care to avoid hot cracking)
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SUSXM15J1 Stainless Steel Introduction
SUSXM15J1 is a copper-bearing austenitic stainless steel specified in JIS G4304 (hot-rolled stainless steel plates, sheets and strip) and JIS G4305 (cold-rolled stainless steel plates, sheets and strip). It is a modification of the standard 18Cr-8Ni grade with an increased nickel content (10.00–13.00%) and the addition of copper (0.70–1.30%). This alloy exhibits excellent deep drawability and non-magnetic work hardening, while maintaining corrosion resistance comparable to SUS304. Typical delivery conditions include solution-annealed and pickled finish, making it suitable for severe cold forming, press-working, and applications requiring low magnetic permeability after forming. It is widely used for kitchen sinks, hollowware, spun parts, and architectural trim.
SUSXM15J1 Stainless Steel Chemical Composition
Chemical composition according to JIS G4304:2005 and JIS G4305:2005 for SUSXM15J1. The copper addition significantly improves cold forming characteristics without sacrificing general corrosion resistance. All values are ladle analysis.
| Element | Standard Value (%) | Remarks |
|---|---|---|
| Carbon (C) | ≤ 0.08 | Maximum |
| Silicon (Si) | ≤ 1.00 | Maximum |
| Manganese (Mn) | ≤ 2.00 | Maximum |
| Phosphorus (P) | ≤ 0.045 | Maximum |
| Sulfur (S) | ≤ 0.030 | Maximum |
| Nickel (Ni) | 10.00 – 13.00 | High Ni enhances deep drawability |
| Chromium (Cr) | 17.00 – 19.00 | Provides corrosion resistance |
| Copper (Cu) | 0.70 – 1.30 | Key element for formability and low work hardening rate |
SUSXM15J1 Stainless Steel Physical Properties
Physical properties at room temperature and typical elevated temperatures. These values are representative for fully austenitic stainless steels with copper addition and are valid for solution-annealed condition.
| Property | Typical Value | Unit | Test Condition |
|---|---|---|---|
| Density (ρ) | 7.93 | g/cm³ | 20 °C |
| Modulus of Elasticity (E) | 193 | GPa | 20 °C, tension |
| Shear Modulus (G) | 74 | GPa | 20 °C, calculated |
| Poisson's Ratio (ν) | 0.30 | — | 20 °C |
| Thermal Expansion Coefficient (α) | 17.3 | 10⁻⁶/K | 0–100 °C |
| Thermal Expansion Coefficient (α) | 17.8 | 10⁻⁶/K | 0–300 °C |
| Thermal Expansion Coefficient (α) | 18.5 | 10⁻⁶/K | 0–500 °C |
| Thermal Conductivity (λ) | 14.0 | W/(m·K) | 20 °C |
| Thermal Conductivity (λ) | 16.3 | W/(m·K) | 100 °C |
| Thermal Conductivity (λ) | 21.5 | W/(m·K) | 500 °C |
| Specific Heat Capacity | 500 | J/(kg·K) | 20 °C |
| Electrical Resistivity (ρ_e) | 0.73 | µΩ·m | 20 °C |
SUSXM15J1 Stainless Steel Mechanical Properties
Mechanical properties for solution-annealed condition per JIS G4304/G4305. Data applies to plate/sheet thickness ≤ 8 mm. Actual values depend on product form and thickness. The low proof stress and high elongation are specifically designed for deep drawing applications.
| Property | Standard Requirement | Unit | Test Condition |
|---|---|---|---|
| Tensile Strength (Rm) | ≥ 520 | MPa | Room temperature, solution annealed |
| Yield Strength (ReH, 0.2% offset) | ≥ 205 | MPa | Room temperature, solution annealed |
| Elongation (A) | ≥ 40 | % | Gauge length 50 mm, thickness ≤ 8 mm |
| Hardness (HBW) | ≤ 187 | — | Brinell hardness, converted |
| Hardness (HV) | ≤ 200 | — | Vickers hardness |
SUSXM15J1 Stainless Steel Equivalent Standards and Substitutable Grades
| Country/Region | Standard | Grade | Remarks |
|---|---|---|---|
| Europe | EN 10088-2 | 1.4567 (X3CrNiCu18-9-4) | Closest European equivalent; similar Cu content and nickel range, but slight differences in Mn and P limits. |
| USA | ASTM A240 | UNS S30430 | 18Cr-9Ni-Cu grade with comparable deep drawability; tensile requirements may differ. |
| USA | ASTM A240 | UNS S30403 / 304L | Lacks copper, but sometimes spec'd for severe forming if corrosion resistance is primary; not a direct equivalent. |
SUSXM15J1 Stainless Steel Application Introduction
SUSXM15J1 is engineered for severe cold forming operations, especially deep drawing and spinning, where its low work hardening rate prevents premature cracking, reduces tool wear, and allows multiple draws without intermediate annealing. The copper addition also promotes a low magnetic permeability after forming, making it ideal for electronic enclosures. It is not recommended for applications requiring high-temperature strength or intergranular corrosion resistance; welding procedures must be controlled to preserve formability.
Product Applications: Deep-drawn kitchen sinks, Stainless steel pots and pans, Tableware (spoons, forks, bowls), Spun parts (vessels, funnels), Automotive exhaust tips and decorative trim, Electronic device casings (low magnetic permeability), Beverage containers and thermoses
Processed into products: Sink bowls and drainer plates, Drawn cups and housings, Stamped automotive trim rings, Spun cylindrical shells and cones, Pressed relay covers and magnetic shield cans, Deep-formed medical trays
Application industries: Kitchenware & household appliances, Automotive components (trim, bezels), Electronics chassis and shielding, Architectural fittings and panels, Food & beverage processing equipment, Medical device housings
SUSXM15J1 Stainless Steel Similar or Alternative Materials for Consideration
| Country/Region | Standard | Grade | Remarks |
|---|---|---|---|
| Japan | JIS G4304/G4305 | SUS304 | Standard 18Cr-8Ni stainless steel without Cu; superior general corrosion resistance but lower drawability. |
| Japan | JIS G4304/G4305 | SUS304L | Low-carbon version of SUS304; excellent weldability and ductility, but work hardening rate higher than SUSXM15J1. |
| Japan | JIS G4304/G4305 | SUS301 | Lower Cr and Ni than SUSXM15J1; used where high spring properties and fatigue strength are needed, not for deep drawing. |
| Europe | EN 10088-2 | 1.4301 (X5CrNi18-10) | Equivalent to SUS304; widely available, but deep drawability inferior to Cu-bearing type. |
Notes:
Heat treatment: Solution annealing at 1040–1100 °C followed by water quenching or rapid air cooling. Cold working: exhibits excellent deep drawability; intermediate annealing between deep draws is rarely needed. Welding: Can be welded by TIG, MIG, and resistance welding; filler metal ER308 or ER308L recommended. Post-weld annealing is advisable to restore corrosion resistance. Stress corrosion cracking resistance: Similar to SUS304; avoid exposure to hot chloride environments. Magnetism: Non-magnetic in annealed condition; may become slightly magnetic after heavy cold work due to transformation of austenite to martensite, but significantly less than SUS304.
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