Stainless Steel 1.4520
EN 1.4520 · UNS S43035 · AISI/SAE 439
1.4520 (X2CrTi17, AISI 439, UNS S43035) is a titanium-stabilized 17% Cr ferritic stainless steel with very low carbon and no nickel addition, part of the standard 4xx sheet, bar and tube family.
Reference datasheet — 1.4520 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.
1.4520 tempers and conditions
1.4520 is supplied in 3 conditions, soft to hard.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
As-welded deposit | Reference condition for fabricated assemblies — Ti stabilization keeps corrosion performance, but HAZ grain growth lowers toughness and ductility. | 280 | 440 | 18 | 160 HB | — |
Quarter hard | Use when extra stiffness/springback is wanted in flat parts with only light bending. | 450 | 550 | 12 | 14 HRC | — |
Cold drawn | Higher strength and better surface/tolerance for automatic machining; ductility markedly reduced. | 480 | 580 | 14 | 18 HRC | — |
Supply forms, finishes and certifications
Ways 1.4520 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
ANN-BAR | Annealed bar/rod | Supply form |
Tube-Ann | Welded tube, bright annealed / annealed and pickled | Supply form |
1D | Hot rolled, annealed, pickled plate/strip | Surface finish |
2BDefault | Cold rolled, annealed, pickled, skin-passed | Surface finish |
2D | Cold rolled, annealed, pickled | Surface finish |
2R/BA | 2R | Surface finish |
What is 1.4520?
1.4520 (X2CrTi17, AISI 439, UNS S43035) is a titanium-stabilized 17% Cr ferritic stainless steel with very low carbon and no nickel addition, part of the standard 4xx sheet, bar and tube family. Engineers choose it for an austenitic-like appearance and deep-draw formability at lower and more stable cost, in 2B, 2D, 2R/BA and 1D sheet, annealed or cold-drawn bar and welded tube; annealed properties are typically 275 MPa yield, 450 MPa tensile, 30% elongation and 150 HB, with service to 815 °C. Chloride pitting resistance stays below 304/316, the grade cannot be hardened by heat treatment, and ridging can show on drawn panels; 1.4509 (441) is the nearest dual-stabilized alternative. 1.4520 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). 1.4520 has a yield strength of 275 MPa (39.9 ksi) and a tensile strength of 450 MPa (65.3 ksi) — weaker than 77% of stainless steel grades. Elongation at break is 30% and the elastic modulus is 220 GPa (31.9 Msi).
What is 1.4520 used for?
- automotive trim
- exhaust components
- kitchen equipment
- architectural panels
Advantages
- Low embodied carbon — 3 kg CO₂/kg, better than 97% of stainless steel grades
- Easy to machine — 55/100, better than 94% of stainless steel grades
- Conducts heat well — 25 W/m·K (14.4 BTU/hr·ft·°F), better than 93% of stainless steel grades
- Forms and bends easily — 78/100, better than 90% of stainless steel grades
- High electrical conductivity — 2.9 % IACS, better than 87% of stainless steel grades
Limitations
- Low strength — 275 MPa (39.9 ksi), worse than 77% of stainless steel grades
1.4520 properties
Typical room-temperature values; bars are the position among stainless steel grades.
Physical3
1.4520 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).
Mechanical14
1.4520 has a yield strength of 275 MPa (39.9 ksi) and a tensile strength of 450 MPa (65.3 ksi) — weaker than 77% of stainless steel grades. Elongation at break is 30% and the elastic modulus is 220 GPa (31.9 Msi).
Thermal6
1.4520 is rated for continuous service to 815°C (1,499 °F). It conducts heat at 25 W/m·K (14.4 BTU/hr·ft·°F), better than 93% of stainless steel grades. Thermal expansion is 10.4 µm/m·K (5.78 µin/in·°F).
Electrical3
1.4520 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 1.4520 takes about 40 MJ of energy and emits 3 kg of CO₂ — less than 97% of stainless steel grades. Typical recycled content is 65%.
Manufacturability7
1.4520's machinability is good (55/100, better than 94% of stainless steel grades); weldability very good (82/100); formability very good (78/100).
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. 1.4520 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 1.4520
Is 1.4520 easy to machine?
Cuts like 430 but gummier — use sharp positive-rake carbide, rigid setup, heavy feed and generous coolant; Ti carbonitrides abrade tooling, so expect ~55–60 % of 1212 speed.
Can 1.4520 be welded?
Excellent for a ferritic: GTAW/GMAW/laser or autogenous resistance welding with low heat input; Ti stabilization avoids sensitization so no post-weld anneal is needed, but keep interpass low and use Ar (no N2) shielding to limit HAZ grain growth.
Can 1.4520 be formed, bent or molded?
Deep drawable (r̄ ≈ 1.4–1.8, low springback vs austenitics) and free of delayed cracking since there is no martensite; watch ridging/roping on drawn panels and avoid very tight bend radii on hot-rolled plate.
1.4520 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 | 0.02 |
| Si | ≤ 0.5 | 0.35 |
| Mn | ≤ 0.5 | 0.35 |
| P | ≤ 0.04 | 0.03 |
| S | ≤ 0.02 | 0 |
| Cr | 16 – 18 | 17 |
| TiTi ≥ 4×(C+N)+0.15 (stabilization) | 0.15 – 0.8 | 0.35 |
| N | ≤ 0.02 | 0.01 |
| Niresidual, not specified in all standards | ≤ 0.5 | 0.2 |
| Fe | balance |
What surface finishes work on 1.4520?
Supplied 2B, BA or No.4; passivate per ASTM A967 after machining, electropolish or PVD-coat for decorative use — do not anodize, and avoid iron contamination which causes 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 1.4520 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- S43035
- AISI / SAE
- 439
- EN / DIN / Werkstoff-Nr.
- X2CrTi17
- Similar grades
- 10Cr17Ti
How much does 1.4520 cost?
1.4520 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.
1.4520 — frequently asked
What is 1.4520 used for?
1.4520 is typically used for automotive trim, exhaust components, kitchen equipment and architectural panels. In short: nickel-free 304 substitute; deep-drawable ferritic sheet; 815 °C service rating.
What is the yield strength of 1.4520?
1.4520 has a typical yield strength of 275 MPa (39.9 ksi) and a tensile strength of 450 MPa (65.3 ksi) — weaker than 77% of stainless steel grades. Strength varies by condition: see the 3 listed tempers.
Is 1.4520 easy to machine?
Reasonably — machinability is rated good (55/100, better than 94% of stainless steel grades). Cuts like 430 but gummier — use sharp positive-rake carbide, rigid setup, heavy feed and generous coolant; Ti carbonitrides abrade tooling, so expect ~55–60 % of 1212 speed.
Can 1.4520 be welded?
Yes — weldability is rated very good (82/100). Excellent for a ferritic: GTAW/GMAW/laser or autogenous resistance welding with low heat input; Ti stabilization avoids sensitization so no post-weld anneal is needed, but keep interpass low and use Ar (no N2) shielding to limit HAZ grain growth.
What surface finishes work on 1.4520?
Supplied 2B, BA or No.4; passivate per ASTM A967 after machining, electropolish or PVD-coat for decorative use — do not anodize, and avoid iron contamination which causes rust staining.
Can 1.4520 be formed, bent or molded?
Deep drawable (r̄ ≈ 1.4–1.8, low springback vs austenitics) and free of delayed cracking since there is no martensite; watch ridging/roping on drawn panels and avoid very tight bend radii on hot-rolled plate.
What is the maximum service temperature of 1.4520?
1.4520 is rated for continuous use to about 815°C (1,499 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does 1.4520 cost?
1.4520 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
- EN 10088-1/-2 Stainless steels — grades and technical delivery conditions for sheet/plate — CEN (2014)
- ASTM A240/A240M (UNS S43035) — ASTM (2022)
- ASTM A268/A268M seamless and welded ferritic stainless tubing (TP439) — ASTM (2021)
- GB/T 3280 (10Cr17Ti) — SAC (2015)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels — ASM International (1990)
- ASM Handbook Vol.13B — Corrosion: Materials — ASM International (2005)
- Outokumpu / Aperam ferritic stainless (4520, 4510, 439) data sheets — Outokumpu; Aperam (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.