Stainless Steel 153 MA
UNS S30415
153 MA (S30415) is a silicon- and cerium-alloyed 18Cr-9Ni austenitic stainless whose stable Cr/Si oxide film gives oxidation resistance to about 980 °C, with a listed maximum service temperature of 1000 °C.
Reference datasheet — 153 MA 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 A condition
153 MA tempers and conditions
153 MA is supplied in 3 conditions, soft to hard. A is the default FabDigit quotes; the values on this page are for it.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
ADefault Solution annealed | Standard stocked condition for plate, sheet, bar and tube; maximum ductility and best high-temperature oxidation behaviour. | 340 | 650 | 45 | 190 HB | — |
Cold drawn | Pick for machined fasteners, pins and small bar parts where tighter tolerance and higher yield strength are wanted. | 550 | 780 | 25 | 22 HRC | 2 % IACS |
Quarter hard | Occasional strip condition where extra room-temperature strength and springback are required; oxidation performance unchanged after annealing in service. | 620 | 850 | 18 | 27 HRC | 2 % IACS |
Supply forms, finishes and certifications
Ways 153 MA is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
1D | Hot rolled, annealed and pickled plate | Surface finish |
2B | Cold rolled, annealed, pickled and skin-passed sheet | Surface finish |
WELD | As welded | Surface finish |
What is 153 MA?
153 MA (S30415) is a silicon- and cerium-alloyed 18Cr-9Ni austenitic stainless whose stable Cr/Si oxide film gives oxidation resistance to about 980 °C, with a listed maximum service temperature of 1000 °C. It is used as the lighter-duty companion to 253 MA where 309/310 would be over-specified, and is stocked as annealed and 1D plate, 2B sheet, cold-drawn bar, quarter-hard strip and welded product. Annealed strength is 340 MPa yield and 650 MPa tensile at 45 % elongation, with good weldability (score 80). Machinability is low (score 35) and long holds in the 600–850 °C range risk sigma-phase embrittlement; step up to 253 MA for higher temperatures. 153 MA has a density of 7.7 g/cm³ (0.278 lb/in³), lighter than 83% of stainless steel grades. It melts at 1,400°C (2,552 °F). 153 MA has a yield strength of 340 MPa (49.3 ksi) and a tensile strength of 650 MPa (94.3 ksi) — weaker than 55% of stainless steel grades. Elongation at break is 45% and the elastic modulus is 200 GPa (29 Msi).
What is 153 MA used for?
- furnace and boiler parts
- exhaust system components
- kiln hardware
Advantages
- High service temperature — 1,000°C (1,832 °F), better than 88% of stainless steel grades
- Readily welded — 80/100, better than 80% of stainless steel grades
- Low embodied carbon — 3.8 kg CO₂/kg, better than 77% of stainless steel grades
- Ductile — tolerates forming and impact — 45%, better than 76% of stainless steel grades
Limitations
- Low electrical conductivity — 2 % IACS, worse than 77% of stainless steel grades
153 MA properties
Typical room-temperature values for 153 MA-A; bars are the position among stainless steel grades.
Physical3
153 MA has a density of 7.7 g/cm³ (0.278 lb/in³), lighter than 83% of stainless steel grades. It melts at 1,400°C (2,552 °F).
Mechanical16
153 MA has a yield strength of 340 MPa (49.3 ksi) and a tensile strength of 650 MPa (94.3 ksi) — weaker than 55% of stainless steel grades. Elongation at break is 45% and the elastic modulus is 200 GPa (29 Msi).
Thermal6
153 MA is rated for continuous service to 1,000°C (1,832 °F). It conducts heat at 15 W/m·K (8.67 BTU/hr·ft·°F), worse than 59% of stainless steel grades. Thermal expansion is 16.5 µm/m·K (9.17 µin/in·°F).
Electrical3
153 MA conducts electricity at 2 % IACS, worse than 77% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is good (57/100), worse than 66% of stainless steel grades.
Sustainability4
Producing a kilogram of 153 MA takes about 55 MJ of energy and emits 3.8 kg of CO₂ — more than 50% of stainless steel grades. Typical recycled content is 70%.
Manufacturability7
153 MA's machinability is fair (35/100, better than 51% of stainless steel grades); weldability very good (80/100); formability good (65/100).
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. 153 MA is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 153 MA
Is 153 MA easy to machine?
Machine like a gummy austenitic: rigid setups, sharp positive-rake carbide, 15–25 % lower surface speed than 304, heavy feed and copious flood coolant to avoid work hardening and built-up edge.
Can 153 MA be welded?
Readily welded by GTAW/GMAW/SMAW with no preheat and low heat input; use over-alloyed heat-resisting filler (253 MA, 22.12.HT or 309/309Si), avoid interpass temperatures above ~150 °C and long dwell in the 600–850 °C σ-phase range.
Can 153 MA be formed, bent or molded?
Cold forms well but work hardens faster than 304 — allow larger bend radii, more press tonnage and interstage annealing at 1050–1100 °C; hot work at 1150–900 °C followed by rapid cooling.
153 MA 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 | 0.04 – 0.06 | 0.05 |
| Sikey oxidation-resistance addition | 1 – 2 | 1.3 |
| Mn | ≤ 0.8 | 0.5 |
| P | ≤ 0.04 | |
| S | ≤ 0.02 | |
| Cr | 18 – 19 | 18.5 |
| Ni | 9 – 10 | 9.5 |
| Nsolid-solution strengthening | 0.12 – 0.18 | 0.15 |
| Cerare-earth addition improving oxide scale adhesion | 0.03 – 0.08 | 0.05 |
| Fe | balance |
What surface finishes work on 153 MA?
Pickle and passivate after hot work or welding to restore the Cr/Si oxide film; mechanical polishing and glass-bead blasting are fine, and no anodising or plating is normally applied.
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 153 MA in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- S30415
How much does 153 MA cost?
153 MA is a high-cost stainless steel ($$$$), pricier than about 78% 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.
153 MA — frequently asked
What is 153 MA used for?
153 MA is typically used for furnace and boiler parts, exhaust system components and kiln hardware. In short: cerium-alloyed heat-resisting austenitic; lighter-duty 253 MA; oxidation resistant to 980 °C.
What is the yield strength of 153 MA?
153 MA has a typical yield strength of 340 MPa (49.3 ksi) and a tensile strength of 650 MPa (94.3 ksi) — weaker than 55% of stainless steel grades. Strength varies by condition: see the 3 listed tempers.
Is 153 MA easy to machine?
Not especially — machinability is rated fair (35/100, better than 51% of stainless steel grades). Machine like a gummy austenitic: rigid setups, sharp positive-rake carbide, 15–25 % lower surface speed than 304, heavy feed and copious flood coolant to avoid work hardening and built-up edge.
Can 153 MA be welded?
Yes — weldability is rated very good (80/100). Readily welded by GTAW/GMAW/SMAW with no preheat and low heat input; use over-alloyed heat-resisting filler (253 MA, 22.12.HT or 309/309Si), avoid interpass temperatures above ~150 °C and long dwell in the 600–850 °C σ-phase range.
What surface finishes work on 153 MA?
Pickle and passivate after hot work or welding to restore the Cr/Si oxide film; mechanical polishing and glass-bead blasting are fine, and no anodising or plating is normally applied.
Can 153 MA be formed, bent or molded?
Cold forms well but work hardens faster than 304 — allow larger bend radii, more press tonnage and interstage annealing at 1050–1100 °C; hot work at 1150–900 °C followed by rapid cooling.
What is the maximum service temperature of 153 MA?
153 MA is rated for continuous use to about 1,000°C (1,832 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 153 MA-A and 153 MA-CD?
A is the default condition — standard stocked condition for plate, sheet, bar and tube; maximum ductility and best high-temperature oxidation behaviour. CD: pick for machined fasteners, pins and small bar parts where tighter tolerance and higher yield strength are wanted. Yield strength is 340 MPa in A versus 550 MPa in CD.
How much does 153 MA cost?
153 MA is a high-cost stainless steel ($$$$), pricier than about 78% 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
- Outokumpu 153 MA (EN 1.4818 / UNS S30415) heat-resisting grade datasheet — Outokumpu (2020)
- EN 10088-2 — Stainless steel sheet/plate/strip for general purposes (X6CrNiSiNCe19-10, 1.4818) — CEN (2014)
- ASTM A240/A240M — Chromium and chromium-nickel stainless steel plate, sheet and strip (S30415) — ASTM International (2022)
- 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)
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.