Stainless Steel 436
AISI/SAE 436 · UNS S43600 · EN 1.4526, X6CrMoNb17-1 · JIS SUS436, SUS436L
436 is a niobium-stabilized, molybdenum-bearing 17% Cr ferritic stainless (S43600, 1.4526, X6CrMoNb17-1, SUS436/436L).
Values for the Annealed condition
436 tempers and conditions
436 is supplied in 4 conditions, soft to hard. Annealed is the default FabDigit quotes; the values on this page are for it.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
AnnealedDefault bright/box annealed, softest condition (2B, BA, 2D sheet; annealed bar) | Default stocked condition for deep-drawn trim, panels and formed parts needing maximum ductility. | 365 | 530 | 30 | 175 HB | — |
1/4 Hard | Pick when flatness and modest springback stiffness are wanted with some remaining bendability. | 480 | 620 | 15 | 13 HRC | 2.9 % IACS |
cold-drawn/cold-finished bar and wire | Choose for machined bar parts and fasteners where straightness, tolerance and higher yield matter. | 550 | 655 | 14 | 16 HRC | 2.9 % IACS |
Half hard | For flat springs, clips and stiff panels formed only by simple bends. | 585 | 725 | 8 | 22 HRC | 2.9 % IACS |
What is 436?
436 is a niobium-stabilized, molybdenum-bearing 17% Cr ferritic stainless (S43600, 1.4526, X6CrMoNb17-1, SUS436/436L). The Nb stabilization limits sensitization in the weld zone while Mo raises pitting resistance, so it is used for welded and deep-drawn sheet and strip supplied annealed, temper rolled, 1/4-hard, 1/2-hard or cold drawn; the default condition gives 365 MPa yield, 530 MPa tensile, 30% elongation and 175 HB with service to 815 °C. Formability (score 72) and stretch-formability remain below austenitic 304, and springback is higher. Use 434 when weld-zone stability is not required, or 439 for titanium-stabilized tubing. 436 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). 436 has a yield strength of 365 MPa (52.9 ksi) and a tensile strength of 530 MPa (76.9 ksi) — weaker than 51% of stainless steel grades. Elongation at break is 30% and the elastic modulus is 200 GPa (29 Msi).
What is 436 used for?
- Automotive exhaust systems and mufflers
- Bright trim mouldings
- Appliance panels and drums
- Heat exchanger and hot-water components
- Deep-drawn cookware and catering parts
- Roofing and architectural sheet
- Wheel covers and mirror shells
Advantages
- Easy to machine — 58/100, better than 97% of stainless steel grades
- Forms and bends easily — 72/100, better than 84% of stainless steel grades
- Low embodied carbon — 3.6 kg CO₂/kg, better than 83% 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
- High service temperature — 815°C (1,499 °F), better than 77% of stainless steel grades
Limitations
- Needs corrosion protection — 48/100, worse than 80% of stainless steel grades
436 properties
Typical room-temperature values for 436-Annealed; bars are the position among stainless steel grades.
Physical3
436 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
436 has a yield strength of 365 MPa (52.9 ksi) and a tensile strength of 530 MPa (76.9 ksi) — weaker than 51% of stainless steel grades. Elongation at break is 30% and the elastic modulus is 200 GPa (29 Msi).
Thermal5
436 is rated for continuous service to 815°C (1,499 °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).
Electrical2
436 has an electrical resistivity of 6×10⁻⁷ Ω·m.
Chemical & Environmental2
Corrosion resistance is fair (48/100), worse than 80% of stainless steel grades.
Sustainability4
Producing a kilogram of 436 takes about 48 MJ of energy and emits 3.6 kg of CO₂ — less than 85% of stainless steel grades. Typical recycled content is 60%.
Manufacturability7
436's machinability is good (58/100, better than 97% of stainless steel grades); weldability good (65/100); formability very good (72/100).
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. 436 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 436
Is 436 easy to machine?
Machines like 430/434 — gummy, work-hardens lightly; use sharp positive-rake carbide, rigid setup, generous coolant and ~55% of 1212 speeds.
Can 436 be welded?
Nb stabilisation limits sensitisation, so GTAW/GMAW/resistance welding of thin gauge is practical; keep heat input low to avoid HAZ grain coarsening and use 430Nb/309L filler when strength/ductility is critical.
Can 436 be formed, bent or molded?
Very good deep-drawability with low ridging/roping thanks to Nb; springback higher and stretch-formability lower than austenitic 304, so allow larger bend radii.
Manufacturability
The process limits FabDigit applies to 436. Every 436 part is priced by an engineer; design inside these and the quote comes back without a redesign loop.
Sheet metal
| Formability | Better72 / 100 |
|---|---|
| Weldability | Fair65 / 100 |
| Bendable | Yes |
436 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 |
|---|---|---|
| C | ≤ 0.12 | 0.05 |
| Mn | ≤ 1 | 0.5 |
| Si | ≤ 1 | 0.5 |
| P | ≤ 0.04 | 0.03 |
| S | ≤ 0.03 | 0.01 |
| Cr | 16 – 18 | 17 |
| Mo | 0.75 – 1.25 | 1 |
| Nb+Tastabilising addition, typically ≥5×C | ≤ 0.75 | 0.45 |
| Niresidual, where specified | ≤ 0.75 | 0.3 |
| Fe | balance |
What surface finishes work on 436?
Takes a bright polish for automotive trim (BA finish common); passivate or electropolish after machining/welding, never anodise.
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).
Plating
Organic Coating
Black / Phosphate
Thermal Spray
Equivalent designations
Standards and trade names that resolve to Stainless Steel 436 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- S43600
- EN / DIN / Werkstoff-Nr.
- 1.4526X6CrMoNb17-1
- JIS
- SUS436SUS436L
How much does 436 cost?
436 is a premium-cost stainless steel ($$$), cheaper than about 58% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
436 — frequently asked
What is 436 used for?
436 is typically used for automotive exhaust systems and mufflers, bright trim mouldings, appliance panels and drums, heat exchanger and hot-water components, deep-drawn cookware and catering parts and roofing and architectural sheet. In short: bright-trim ferritic stainless.
What is the yield strength of 436?
436 has a typical yield strength of 365 MPa (52.9 ksi) and a tensile strength of 530 MPa (76.9 ksi) — weaker than 51% of stainless steel grades. Strength varies by condition: see the 4 listed tempers.
Is 436 easy to machine?
Reasonably — machinability is rated good (58/100, better than 97% of stainless steel grades). Machines like 430/434 — gummy, work-hardens lightly; use sharp positive-rake carbide, rigid setup, generous coolant and ~55% of 1212 speeds.
Can 436 be welded?
Yes — weldability is rated good (65/100). Nb stabilisation limits sensitisation, so GTAW/GMAW/resistance welding of thin gauge is practical; keep heat input low to avoid HAZ grain coarsening and use 430Nb/309L filler when strength/ductility is critical.
What surface finishes work on 436?
Takes a bright polish for automotive trim (BA finish common); passivate or electropolish after machining/welding, never anodise.
Can 436 be formed, bent or molded?
Very good deep-drawability with low ridging/roping thanks to Nb; springback higher and stretch-formability lower than austenitic 304, so allow larger bend radii.
What is the maximum service temperature of 436?
436 is rated for continuous use to about 815°C (1,499 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does 436 cost?
436 is a premium-cost stainless steel ($$$), cheaper than about 58% 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.
Can FabDigit make parts in 436?
Yes — 436 is available for sheet metal; every part is priced by an engineer rather than instantly. Upload a STEP file to get a price and a DFM check.
Sources
- ASTM A240/A240M — Chromium and Chromium-Nickel Stainless Steel Plate, Sheet and Strip — ASTM International (2023)
- ASTM A176 — Stainless and Heat-Resisting Chromium Steel Plate, Sheet and Strip — ASTM International (2018)
- ASM Handbook Vol.1: Properties and Selection — Irons, Steels and High-Performance Alloys — ASM International (1990)
- ASM Handbook Vol.16: Machining — ASM International (1989)
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.