Stainless Steel E430
EN E430 · UNS W43010
E430 is a straight-chromium ferritic stainless electrode (W43010, E430-16 to GB/T 983) matching Type 430 base metal, supplied in -15, -16, -17, -25 and -26 coatings with as-welded and PWHT deposit data.
Reference datasheet — E430 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.
Values for the E430-16 condition
E430 tempers and conditions
E430 is supplied in 7 conditions, soft to hard. E430-16 is the default FabDigit quotes; the values on this page are for it.
Compare all 7 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Post-weld heat treated | Standard qualification/service condition: tempers HAZ martensite, restores ductility, toughness and corrosion behaviour. | 380 | 500 | 24 | 175 HB | 2.9 % IACS |
Lime (basic) coated electrode, DCEP only, low hydrogen | Pick when low diffusible hydrogen and better weld-metal toughness/crack resistance are needed on thicker or restrained ferritic joints. | 395 | 510 | 23 | 180 HB | 2.9 % IACS |
Heavy lime coating, DCEP, flat/horizontal-fillet only, high deposition | For high-deposition flat-position welding and surfacing of heavier 430 sections. | 395 | 510 | 22 | 185 HB | 2.9 % IACS |
E430-16Default Titania (rutile-lime) coated electrode, AC or DCEP, all positions | The standard stocked E430 electrode: smooth arc, easy slag removal, AC-capable, used for most decorative and appliance repairs. | 400 | 520 | 22 | 185 HB | 2.9 % IACS |
Heavy titania coating, AC/DCEP, flat/horizontal-fillet only, high… | AC-capable high-recovery version of -25 for productive flat-position fillet welding and cladding. | 400 | 515 | 22 | 188 HB | 2.9 % IACS |
Silica-rutile (acid-rutile) coated electrode, AC/DCEP | Choose for the smoothest bead appearance and finest ripple on thin decorative sheet; slightly lower toughness than -15. | 405 | 525 | 21 | 190 HB | 2.9 % IACS |
As-welded deposit | Condition of the joint if PWHT is skipped: higher strength and hardness from untempered martensite, but low ductility and toughness. | 470 | 590 | 10 | 22 HRC | 2.8 % IACS |
What is E430?
E430 is a straight-chromium ferritic stainless electrode (W43010, E430-16 to GB/T 983) matching Type 430 base metal, supplied in -15, -16, -17, -25 and -26 coatings with as-welded and PWHT deposit data. It is used for mild-corrosive decorative and appliance work where colour match to 430 sheet and moderate corrosion resistance matter. Typical deposit values are 400 MPa yield, 520 MPa tensile and 22 % elongation, with service to 800 °C. The as-welded joint contains hard martensite and coarse ferrite, so preheat and a 760–790 °C anneal are normally required; E430Nb is the stabilized alternative when intergranular corrosion is a concern. E430 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). E430 has a yield strength of 400 MPa (58 ksi) and a tensile strength of 520 MPa (75.4 ksi) — stronger than 57% of stainless steel grades. Elongation at break is 22% and the elastic modulus is 200 GPa (29 Msi).
What is E430 used for?
- Kitchen equipment fabrication
- Architectural trim welding
- Automotive trim repair
- Mild acid resistant tanks
Advantages
- Low embodied carbon — 3 kg CO₂/kg, better than 97% of stainless steel grades
- High electrical conductivity — 2.9 % IACS, better than 87% of stainless steel grades
- Easy to machine — 45/100, better than 84% of stainless steel grades
- Conducts heat well — 23.9 W/m·K (13.8 BTU/hr·ft·°F), better than 79% of stainless steel grades
Limitations
- Low fracture toughness — 48 MPa·√m (43.7 ksi·√in), worse than 93% of stainless steel grades
- Needs corrosion protection — 45/100, worse than 85% of stainless steel grades
- Limited ductility — 22%, worse than 75% of stainless steel grades
E430 properties
Typical room-temperature values for E430-E430-16; bars are the position among stainless steel grades.
Physical3
E430 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).
Mechanical16
E430 has a yield strength of 400 MPa (58 ksi) and a tensile strength of 520 MPa (75.4 ksi) — stronger than 57% of stainless steel grades. Elongation at break is 22% and the elastic modulus is 200 GPa (29 Msi).
Thermal6
E430 is rated for continuous service to 800°C (1,472 °F). It conducts heat at 23.9 W/m·K (13.8 BTU/hr·ft·°F), better than 79% of stainless steel grades. Thermal expansion is 10.4 µm/m·K (5.78 µin/in·°F).
Electrical3
E430 conducts electricity at 2.9 % IACS, better than 87% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is fair (45/100), worse than 85% of stainless steel grades.
Sustainability4
Producing a kilogram of E430 takes about 38 MJ of energy and emits 3 kg of CO₂ — less than 99% of stainless steel grades. Typical recycled content is 65%.
Manufacturability6
E430's machinability is fair (45/100, better than 84% of stainless steel grades); weldability good (55/100); formability poor (30/100).
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. E430 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with E430
Is E430 easy to machine?
Weld deposit machines like annealed Type 430 (~50 % of 1212) after PWHT; in the as-welded state hard martensitic HAZ dulls tools — anneal first.
Can E430 be welded?
Preheat 150–260 °C, keep interpass moderate, use short arc and stringer beads, then anneal 760–790 °C and furnace cool; redry electrodes 250–300 °C before use.
Can E430 be formed, bent or molded?
Deposited joints tolerate only limited cold forming; ferritic weld metal is notch-sensitive at room temperature so avoid bending as-welded.
E430 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 |
|---|---|---|
| CAWS A5.4 undiluted weld metal | ≤ 0.1 | 0.06 |
| Cr | 15 – 18 | 16.5 |
| Ni | ≤ 0.6 | 0.3 |
| Mo | ≤ 0.75 | 0.2 |
| Mn | ≤ 1 | 0.6 |
| Si | ≤ 0.9 | 0.5 |
| P | ≤ 0.04 | 0.02 |
| S | ≤ 0.03 | 0.02 |
| Cu | ≤ 0.75 | 0.1 |
| Fe | balance |
What surface finishes work on E430?
Grinds and polishes to a bright finish that colour-matches 430 sheet; passivate after grinding, and avoid carbon-steel contamination to prevent rust staining.
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
Equivalent designations
Standards and trade names that resolve to Stainless Steel E430 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- W43010
- Also called
- AWS A5.4 E430-XX
How much does E430 cost?
E430 is a premium-cost stainless steel ($$$), cheaper than about 51% 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.
E430 — frequently asked
What is E430 used for?
E430 is typically used for kitchen equipment fabrication, architectural trim welding, automotive trim repair and mild acid resistant tanks. In short: colour-matches 430 sheet; low-cost ferritic electrode; needs preheat and anneal.
What is the yield strength of E430?
E430 has a typical yield strength of 400 MPa (58 ksi) and a tensile strength of 520 MPa (75.4 ksi) — stronger than 57% of stainless steel grades. Strength varies by condition: see the 7 listed tempers.
Is E430 easy to machine?
Reasonably — machinability is rated fair (45/100, better than 84% of stainless steel grades). Weld deposit machines like annealed Type 430 (~50 % of 1212) after PWHT; in the as-welded state hard martensitic HAZ dulls tools — anneal first.
Can E430 be welded?
Yes — weldability is rated good (55/100). Preheat 150–260 °C, keep interpass moderate, use short arc and stringer beads, then anneal 760–790 °C and furnace cool; redry electrodes 250–300 °C before use.
What surface finishes work on E430?
Grinds and polishes to a bright finish that colour-matches 430 sheet; passivate after grinding, and avoid carbon-steel contamination to prevent rust staining.
Can E430 be formed, bent or molded?
Deposited joints tolerate only limited cold forming; ferritic weld metal is notch-sensitive at room temperature so avoid bending as-welded.
What is the maximum service temperature of E430?
E430 is rated for continuous use to about 800°C (1,472 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between E430-16 and E430-AW?
E430-16 is the default condition — the standard stocked E430 electrode: smooth arc, easy slag removal, AC-capable, used for most decorative and appliance repairs. AW: condition of the joint if PWHT is skipped: higher strength and hardness from untempered martensite, but low ductility and toughness. Yield strength is 400 MPa in E430-16 versus 470 MPa in AW.
How much does E430 cost?
E430 is a premium-cost stainless steel ($$$), cheaper than about 51% 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
- AWS A5.4/A5.4M — Stainless Steel Electrodes for Shielded Metal Arc Welding — American Welding Society (2012)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels — ASM International (1990)
- ASM Handbook Vol.6 — Welding, Brazing and Soldering — ASM International (1993)
- Stainless SMAW electrode datasheets (E430-16/-15) — Lincoln Electric / ESAB / (2023)
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.