SUS436J1L Ferritic Stainless Steel
SUS436J1L Ferritic Stainless Steel: Properties, Equivalents & Applications Overview
Detailed technical data for SUS436J1L ferritic stainless steel including chemical composition, mechanical and thermal properties, international equivalents, and application guidance.
Hot rolling, cold rolling, annealing, pickling, welding, bending, deep drawing, forming
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SUS436J1L Ferritic Stainless Steel Introduction
SUS436J1L is a low-carbon, titanium/niobium-stabilized ferritic stainless steel specified in JIS G4305 (cold-rolled) and JIS G4304 (hot-rolled). It offers excellent resistance to intergranular corrosion, good formability, and high-temperature oxidation resistance up to approximately 800°C. The alloy is designed to prevent sensitization during welding by stabilizing carbon and nitrogen with titanium, niobium, or zirconium. Compared to standard SUS436L, the J1L variant provides improved pitting resistance due to controlled molybdenum addition (0.75-1.25%). Typical applications include automotive exhaust systems, heat exchangers, and kitchen equipment. The steel is ferritic through all temperature ranges and is not hardenable by heat treatment.
SUS436J1L Ferritic Stainless Steel Chemical Composition
The following chemical composition is according to JIS G4305:2012 for cold-rolled stainless steel plate/coil. The alloy is stabilized with titanium, niobium, and/or zirconium to prevent chromium carbide precipitation. The stabilizing elements must satisfy the formula: Ti ≥ 8×(C+N) and ≤ 0.80; Nb ≥ 10×C and ≤ 1.00; and Ti+Nb+Zr ≥ 0.10 + 8×(C+N).
| Element | Specified Value | Remarks |
|---|---|---|
| Carbon (C) | ≤0.025 | |
| Silicon (Si) | ≤1.00 | |
| Manganese (Mn) | ≤1.00 | |
| Phosphorus (P) | ≤0.040 | |
| Sulfur (S) | ≤0.030 | |
| Chromium (Cr) | 16.00 - 19.00 | |
| Molybdenum (Mo) | 0.75 - 1.25 | |
| Titanium (Ti) | 8×(C+N) ≤ Ti ≤ 0.80 | Stabilizing element |
| Niobium (Nb) | 10×C ≤ Nb ≤ 1.00 | Stabilizing element |
| Zirconium (Zr) | Can be used in combination | Stabilizing element |
| Combined Ti+Nb+Zr | ≥0.10 + 8×(C+N) | |
| Nitrogen (N) | Not specified; typical ≤0.025 | Stabilizing calculation requires N |
SUS436J1L Ferritic Stainless Steel Physical and Thermal Properties
Typical physical properties for SUS436J1L ferritic stainless steel at room temperature unless otherwise noted. Values are for annealed condition and may vary slightly with processing history.
| Property | Typical Value | Unit | Test Condition / Temperature |
|---|---|---|---|
| Density (ρ) | 7.7 | g/cm³ | 20°C |
| Elastic Modulus (E) | 200 | GPa | 20°C |
| Shear Modulus (G) | 77 | GPa | 20°C, calculated |
| Poisson's Ratio (ν) | 0.28 | - | 20°C |
| Thermal Expansion Coefficient (α) | 10.4 | 10⁻⁶/K | 0-100°C |
| Thermal Expansion Coefficient (α) | 10.8 | 10⁻⁶/K | 0-200°C |
| Thermal Expansion Coefficient (α) | 11.2 | 10⁻⁶/K | 0-400°C |
| Thermal Conductivity (λ) | 25 | W/(m·K) | 20°C |
| Thermal Conductivity (λ) | 26 | W/(m·K) | 100°C |
| Thermal Conductivity (λ) | 27 | W/(m·K) | 500°C |
| Specific Heat Capacity | 460 | J/(kg·K) | 20°C |
| Electrical Resistivity (ρ_e) | 0.60 | µΩ·m | 20°C |
SUS436J1L Ferritic Stainless Steel Mechanical Properties
Mechanical properties for annealed condition according to JIS G4305 (cold-rolled) and JIS G4304 (hot-rolled). Properties may vary depending on product form and thickness. For cold-rolled sheet/coil up to 8.0 mm thickness, the minimum values are shown. Hardness values are for reference.
| Property | Specified Value | Unit | Test Condition |
|---|---|---|---|
| Yield Strength (ReH) | ≥245 | MPa | Room temperature, 0.2% offset, cold-rolled ≤8.0 mm |
| Tensile Strength (Rm) | ≥410 | MPa | Room temperature, cold-rolled ≤8.0 mm |
| Elongation (A) | ≥20 | % | Gauge length 50 mm, thickness ≤8.0 mm, cold-rolled |
| Hardness | ≤230 | HV | Annealed condition |
| Hardness | ≤219 | HB | Annealed condition |
| Hardness | ≤90 | HRB | Annealed condition |
| Yield Strength (ReH) | ≥245 | MPa | Hot-rolled plate >6.0 - 75 mm (JIS G4304) |
| Tensile Strength (Rm) | ≥410 | MPa | Hot-rolled plate >6.0 - 75 mm |
| Elongation (A) | ≥20 | % | Hot-rolled plate >6.0 - 75 mm |
SUS436J1L Ferritic Stainless Steel Completely Equivalent Material Standards and Substitutable Grades
| Country/Region | Standard | Grade | Remarks |
|---|---|---|---|
| Japan | JIS G4305, JIS G4304 | SUS436J1L | Base reference |
| USA | ASTM A240/A240M | S43600 (Type 436) | Similar but carbon limit is higher (0.12% max); SUS436J1L is low-carbon variant |
| Europe | EN 10088-2 | 1.4526 (X2CrMoTi17-1) | Close match; C≤0.025, Cr 16-18, Mo 0.80-1.40, Ti stabilized |
| China | GB/T 3280 | S11862 (019Cr18MoTi) | Approximate; composition can be adjusted per agreement |
| International | ISO 15510 | X2CrMoTi17-1 (436-4526-?-?) | Listed as similar ferritic stainless steel |
SUS436J1L Ferritic Stainless Steel Application Introduction
SUS436J1L is extensively used where weldable ferritic stainless steel with good corrosion resistance and high-temperature oxidation resistance is required. Its low carbon and stabilization prevent intergranular attack after welding, making it suitable for formed and welded components without post-weld heat treatment. It can be processed by deep drawing, bending, stamping, and welding (TIG, MIG, resistance welding). Typical applications span automotive, household appliances, and industrial sectors.
Product Applications: Automotive exhaust pipes and mufflers, Catalytic converter housings, Manifold covers and heat shields, Hot water storage tanks (indirect heating), Kitchen sinks and countertops, Heat exchanger tubes and plates, Washing machine outer tubs and drums
Processed into products: Exhaust manifold flanges, EGR cooler components, Fuel filler necks, Heat exchanger baffles, Dishwasher interiors, Chimney liners, Solar water heater collectors
Application industries: Automotive (exhaust, fuel systems), Heat exchanger and boiler manufacturing, Household appliances (kitchen equipment, washing machines), Architecture and construction (cladding, roofing), Industrial chemical processing equipment, Environmental engineering (flue gas desulfurization)
SUS436J1L Ferritic Stainless Steel Similar / Alternative Material Recommendations
| Country/Region | Standard | Grade | Remarks |
|---|---|---|---|
| Japan | JIS G4305 | SUS430J1L | Lower Mo (0.9-1.25%) but higher C (≤0.025); slightly reduced corrosion resistance but often used interchangeably in less demanding exhaust environments |
| Japan | JIS G4305 | SUS436L | Mo 0.75-1.25% but Ti+Nb stabilization may differ; similar performance |
| USA | ASTM A240 | S43932 (Type 439) | Ti-stabilized 18Cr without Mo; lower cost but lower pitting resistance |
| Europe | EN 10088-2 | 1.4509 (X2CrTiNb18) | 18Cr stabilized with Ti+Nb, no Mo; suitable for applications where Mo is not required |
| China | GB/T 3280 | S11863 (019Cr19Mo2NbTi) | 19Cr-2Mo stabilized; higher Mo for improved corrosion |
Notes:
Welding considerations: Use low heat input and matching or slightly over-alloyed filler (e.g., 309L or 308L). No preheating or post-weld heat treatment required. Surface finish: Available in 2B, BA, No.4, and brushed finishes. Ordering condition: Typically supplied annealed and pickled, meeting JIS G4305 tolerances. Caution: Although stable at high temperatures, prolonged exposure above 850°C may cause grain growth and embrittlement. Not recommended for load-bearing applications at cryogenic temperatures due to ductile-to-brittle transition.
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