Stainless Steel 1.4630-AW (As-welded deposit)
Heat-treated state
EN 1.4630
Reference condition for thin-gauge welded assemblies; Ti stabilization keeps the HAZ corrosion-resistant but grain growth cuts toughness.
Values for the AW condition
Other 1.4630 tempers and conditions
1.4630 is listed in 4 conditions; see the grade overview at 1.4630.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
AWThis page As-welded deposit | Reference condition for thin-gauge welded assemblies; Ti stabilization keeps the HAZ corrosion-resistant but grain growth cuts toughness. | 290 | 440 | 18 | 165 HB | 2.6 % IACS |
ADefault Solution annealed | Standard stocked condition for sheet and strip that will be formed, welded or roll-formed. | 300 | 460 | 28 | 155 HB | — |
Cold worked / temper rolled | Use for flat springs, clips and stiffer thin panels where extra yield strength beats formability. | 460 | 560 | 14 | 13 HRC | 2.6 % IACS |
Cold drawn | Bar and wire condition for turned fittings, shafts of light duty and cold-headed parts. | 500 | 600 | 12 | 200 HB | 2.6 % IACS |
What is 1.4630-AW?
1.4630-AW is 1.4630 heat treated to AW — reference condition for thin-gauge welded assemblies; Ti stabilization keeps the HAZ corrosion-resistant but grain growth cuts toughness. 1.4630-AW has a yield strength of 290 MPa (42.1 ksi) and a tensile strength of 440 MPa (63.8 ksi) — weaker than 72% of stainless steel grades. Elongation at break is 18% and the elastic modulus is 220 GPa (31.9 Msi). 1.4630-AW has a density of 7.7 g/cm³ (0.278 lb/in³), lighter than 83% of stainless steel grades. It melts at 1,450°C (2,642 °F). A is the default condition FabDigit quotes; AW is available on request or by drawing note.
Advantages
- Easy to machine — 50/100, better than 90% of stainless steel grades
- Low embodied carbon — 3.6 kg CO₂/kg, better than 83% of stainless steel grades
- Conducts heat well — 24 W/m·K (13.9 BTU/hr·ft·°F), better than 81% of stainless steel grades
- Readily welded — 80/100, better than 80% of stainless steel grades
- High electrical conductivity — 2.6 % IACS, better than 77% of stainless steel grades
Limitations
- Needs corrosion protection — 43/100, worse than 88% of stainless steel grades
- Limited ductility — 18%, worse than 83% of stainless steel grades
1.4630-AW properties
Typical room-temperature values for 1.4630-AW; 20 are specific to this condition. Other listed values are 1.4630 reference data and may not represent this condition. Bars are the position among stainless steel grades.
Physical3
1.4630-AW has a density of 7.7 g/cm³ (0.278 lb/in³), lighter than 83% of stainless steel grades. It melts at 1,450°C (2,642 °F).
Mechanical14
1.4630-AW has a yield strength of 290 MPa (42.1 ksi) and a tensile strength of 440 MPa (63.8 ksi) — weaker than 72% of stainless steel grades. Elongation at break is 18% and the elastic modulus is 220 GPa (31.9 Msi).
Thermal6
1.4630-AW is rated for continuous service to 800°C (1,472 °F). It conducts heat at 24 W/m·K (13.9 BTU/hr·ft·°F), better than 81% of stainless steel grades. Thermal expansion is 10.5 µm/m·K (5.83 µin/in·°F).
Electrical3
1.4630-AW conducts electricity at 2.6 % IACS, better than 77% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is fair (43/100), worse than 88% of stainless steel grades.
Sustainability4
Producing a kilogram of 1.4630-AW takes about 55 MJ of energy and emits 3.6 kg of CO₂ — more than 50% of stainless steel grades. Typical recycled content is 70%.
Manufacturability7
1.4630-AW's machinability is fair (50/100, better than 90% of stainless steel grades); weldability very good (80/100); formability fair (40/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 1.4630-AW
Is 1.4630 easy to machine?
Soft and gummy: use sharp positive-rake carbide, rigid setups, heavy feeds and flood coolant to avoid built-up edge; rates roughly half of 12L14.
Can 1.4630 be welded?
Readily GTAW/GMAW/laser welded in thin gauges with low heat input and Ar/Ar-He shielding; Ti stabilization avoids sensitization, but keep interpass heat low to limit HAZ grain coarsening — use 430Ti/439 or austenitic 308L/309L filler.
Can 1.4630 be formed, bent or molded?
Good roll-forming, bending and moderate deep drawing with low springback and no work-hardening spike; avoid sharp bends transverse to rolling in heavy gauge and preheat to ~100 °C for severe cold bends.
What surface finishes work on 1.4630?
Passivate or electropolish after pickling; No.4 brushed and bright annealed finishes take well, and it accepts painting/enamel after light abrasion — do not anodize.
1.4630 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 |
|---|---|---|
| Clow carbon for ferritic ductility and weldability | ≤ 0.03 | 0.02 |
| Siraises scaling/oxidation resistance | 0.8 – 1.5 | 1.1 |
| Mn | ≤ 1 | 0.4 |
| P | ≤ 0.04 | — |
| S | ≤ 0.02 | — |
| Cr | 14 – 16 | 15 |
| Tistabilizer, typically ≥4×(C+N)+0.15 | 0.15 – 0.6 | 0.3 |
| N | ≤ 0.03 | 0.02 |
| Fe | balance | — |
1.4630-AW — frequently asked
What is 1.4630-AW used for?
1.4630-AW is typically used for exhaust components, heat exchanger parts and domestic appliances. In short: low-cost stabilized ferritic; weld-friendly in thin gauge; nickel-free 850 °C grade.
What is the yield strength of 1.4630-AW?
1.4630-AW has a typical yield strength of 290 MPa (42.1 ksi) and a tensile strength of 440 MPa (63.8 ksi) — weaker than 72% of stainless steel grades. Strength varies by condition: see the 4 listed tempers.
Is 1.4630-AW easy to machine?
Reasonably — machinability is rated fair (50/100, better than 90% of stainless steel grades). Soft and gummy: use sharp positive-rake carbide, rigid setups, heavy feeds and flood coolant to avoid built-up edge; rates roughly half of 12L14.
Can 1.4630-AW be welded?
Yes — weldability is rated very good (80/100). Readily GTAW/GMAW/laser welded in thin gauges with low heat input and Ar/Ar-He shielding; Ti stabilization avoids sensitization, but keep interpass heat low to limit HAZ grain coarsening — use 430Ti/439 or austenitic 308L/309L filler.
What surface finishes work on 1.4630-AW?
Passivate or electropolish after pickling; No.4 brushed and bright annealed finishes take well, and it accepts painting/enamel after light abrasion — do not anodize.
Can 1.4630-AW be formed, bent or molded?
Good roll-forming, bending and moderate deep drawing with low springback and no work-hardening spike; avoid sharp bends transverse to rolling in heavy gauge and preheat to ~100 °C for severe cold bends.
What is the maximum service temperature of 1.4630-AW?
1.4630-AW 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 1.4630-A and 1.4630-CD?
A is the default condition — standard stocked condition for sheet and strip that will be formed, welded or roll-formed. CD: bar and wire condition for turned fittings, shafts of light duty and cold-headed parts. Yield strength is 300 MPa in A versus 500 MPa in CD.
Sources
- EN 10088-1 Stainless steels — List of stainless steels — CEN (2014)
- EN 10088-2 Technical delivery conditions for sheet/plate and strip for general purposes — CEN (2014)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
- ASM Handbook Vol.13B — Corrosion: Materials — ASM International (2005)
- Ti-stabilized ferritic stainless (439/441/K15 class) sheet datasheets — Outokumpu / Aperam (2023)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.