Stainless Steel SUS430J1L
JIS SUS430J1L
SUS430J1L is a low-carbon, Nb-stabilized 430-type ferritic stainless engineered for deep drawing, combining ultra-low C+N with niobium stabilization to raise the r-value and suppress ridging.
Reference datasheet — SUS430J1L is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
SUS430J1L tempers and conditions
SUS430J1L is supplied in 2 conditions, soft to hard.
Compare all 2 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Quarter hard | Choose when higher stiffness/dent resistance is needed and only mild forming follows. | 450 | 550 | 15 | 180 HB | 2.9 % IACS |
Half hard | Springy flat strip for clips, brackets and roll-formed profiles; deep drawing not possible. | 550 | 620 | 8 | 17 HRC | 2.9 % IACS |
Supply forms, finishes and certifications
Ways SUS430J1L is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
2BDefault | Cold rolled, annealed, pickled and skin-passed | Surface finish |
BA | Bright annealed cold rolled sheet | Surface finish |
No.1 | Hot rolled, annealed and pickled plate/coil | Surface finish |
No.4 | Annealed sheet with abrasive-belt brushed finish | Surface finish |
What is SUS430J1L?
SUS430J1L is a low-carbon, Nb-stabilized 430-type ferritic stainless engineered for deep drawing, combining ultra-low C+N with niobium stabilization to raise the r-value and suppress ridging. It is specified for single-stroke pressed sink bowls and appliance panels and is supplied as 2B, BA, No.4 and No.1 sheet plus 1/4H and 1/2H tempers. Annealed properties are about 290 MPa yield, 470 MPa tensile, 32 % elongation and 78 HRB, with a formability score of 88. Service temperature is limited to roughly 750 °C and chloride pitting resistance is below Mo-bearing ferritics, so SUS436L or 304 is the step up. SUS430J1L has a density of 7.7 g/cm³ (0.278 lb/in³), lighter than 83% of stainless steel grades. It melts at 1,425°C (2,597 °F). SUS430J1L has a yield strength of 290 MPa (42.1 ksi) and a tensile strength of 470 MPa (68.2 ksi) — weaker than 72% of stainless steel grades. Elongation at break is 32% and the elastic modulus is 200 GPa (29 Msi).
What is SUS430J1L used for?
- kitchen sink bowls
- deep-drawn appliance parts
- building exterior cladding
- cookware
Advantages
- Forms and bends easily — 88/100, better than 97% of stainless steel grades
- Conducts heat well — 26 W/m·K (15 BTU/hr·ft·°F), better than 96% of stainless steel grades
- Low embodied carbon — 3.2 kg CO₂/kg, better than 95% of stainless steel grades
- Easy to machine — 55/100, better than 94% of stainless steel grades
- Polishes to a fine finish — 80/100, better than 89% of stainless steel grades
SUS430J1L properties
Typical room-temperature values; bars are the position among stainless steel grades.
Physical3
SUS430J1L has a density of 7.7 g/cm³ (0.278 lb/in³), lighter than 83% of stainless steel grades. It melts at 1,425°C (2,597 °F).
Mechanical13
SUS430J1L has a yield strength of 290 MPa (42.1 ksi) and a tensile strength of 470 MPa (68.2 ksi) — weaker than 72% of stainless steel grades. Elongation at break is 32% and the elastic modulus is 200 GPa (29 Msi).
Thermal6
SUS430J1L is rated for continuous service to 750°C (1,382 °F). It conducts heat at 26 W/m·K (15 BTU/hr·ft·°F), better than 96% of stainless steel grades. Thermal expansion is 10.4 µm/m·K (5.78 µin/in·°F).
Electrical3
SUS430J1L conducts electricity at 2.9 % IACS, better than 87% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is good (55/100), worse than 71% of stainless steel grades.
Sustainability4
Producing a kilogram of SUS430J1L takes about 45 MJ of energy and emits 3.2 kg of CO₂ — less than 91% of stainless steel grades. Typical recycled content is 65%.
Manufacturability6
SUS430J1L's machinability is good (55/100, better than 94% of stainless steel grades); weldability very good (78/100); formability excellent (88/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the stainless steel family
Yield strength against density for every stainless steel grade FabDigit runs. SUS430J1L is highlighted; hover a dot for its name, or open the interactive family chart.
Working with SUS430J1L
Is SUS430J1L easy to machine?
Machines like Type 430 — moderate power, gummy chips; use sharp carbide, rigid setups and generous coolant, roughly 55 % of AISI 1212 speed.
Can SUS430J1L be welded?
Excellent for a ferritic: Nb stabilization plus ultra-low C+N avoids sensitization, so GTAW/laser/resistance welds need no post-weld anneal; limit heat input to control grain coarsening and use 430Nb or 309L filler.
Can SUS430J1L be formed, bent or molded?
Designed for single-stroke deep drawing — high r̄ value, low ridging/roping and low springback; still avoid sharp radii below ~1t and keep tooling clean to prevent galling.
SUS430J1L chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| Cultra-low carbon | ≤ 0.03 | 0.01 |
| Si | ≤ 1 | 0.35 |
| Mn | ≤ 1 | 0.35 |
| P | ≤ 0.04 | |
| S | ≤ 0.03 | |
| Ni | ≤ 0.6 | 0.2 |
| Cr | 16 – 20 | 18 |
| Cuimproves corrosion resistance and drawability | 0.3 – 0.8 | 0.5 |
| Nbstabilizer; standard permits Ti/Zr combinations | 0.1 – 0.6 | 0.3 |
| N | ≤ 0.03 | 0.01 |
| Fe | balance |
What surface finishes work on SUS430J1L?
Takes 2B, BA, No.4 and mirror polish well; passivate or electropolish after forming, and do not anodize (ferrous alloy). Chloride-exposed parts benefit from regular rinsing.
Surface treatments FabDigit runs on stainless steel parts — pick them in the quote configurator or call them out on the drawing. Each links to its datasheet in the surface-finish library (thickness, specs, call-out, material verdicts).
Passivation
Organic Coating
Thermal Spray
How much does SUS430J1L cost?
SUS430J1L is a standard-cost stainless steel ($$), cheaper than about 71% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
SUS430J1L — frequently asked
What is SUS430J1L used for?
SUS430J1L is typically used for kitchen sink bowls, deep-drawn appliance parts, building exterior cladding and cookware. In short: best-drawing ferritic stainless; sink-bowl pressing grade; no post-weld anneal needed.
What is the yield strength of SUS430J1L?
SUS430J1L has a typical yield strength of 290 MPa (42.1 ksi) and a tensile strength of 470 MPa (68.2 ksi) — weaker than 72% of stainless steel grades. Strength varies by condition: see the 2 listed tempers.
Is SUS430J1L easy to machine?
Reasonably — machinability is rated good (55/100, better than 94% of stainless steel grades). Machines like Type 430 — moderate power, gummy chips; use sharp carbide, rigid setups and generous coolant, roughly 55 % of AISI 1212 speed.
Can SUS430J1L be welded?
Yes — weldability is rated very good (78/100). Excellent for a ferritic: Nb stabilization plus ultra-low C+N avoids sensitization, so GTAW/laser/resistance welds need no post-weld anneal; limit heat input to control grain coarsening and use 430Nb or 309L filler.
What surface finishes work on SUS430J1L?
Takes 2B, BA, No.4 and mirror polish well; passivate or electropolish after forming, and do not anodize (ferrous alloy). Chloride-exposed parts benefit from regular rinsing.
Can SUS430J1L be formed, bent or molded?
Designed for single-stroke deep drawing — high r̄ value, low ridging/roping and low springback; still avoid sharp radii below ~1t and keep tooling clean to prevent galling.
What is the maximum service temperature of SUS430J1L?
SUS430J1L is rated for continuous use to about 750°C (1,382 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does SUS430J1L cost?
SUS430J1L is a standard-cost stainless steel ($$), cheaper than about 71% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- JIS G4305 Cold-rolled stainless steel plate, sheet and strip — JSA (2021)
- JIS G4304 Hot-rolled stainless steel plate, sheet and strip — JSA (2021)
- ASM Handbook Vol.1: Properties and Selection — Irons, Steels and High-Performance Alloys — ASM International (1990)
- Ferritic stainless steel sheet for sinks and appliances (430J1L class) — JFE Steel / Nippon Steel Stainless (2022)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.