253MA is a 21Cr-11Ni grade for oxidation/creep duty to ~1150 °C at lower alloy cost; 353MA carries far more nickel (20–22%) and chromium, adding carburization and thermal-fatigue resistance for the most severe furnace service.

Grades · Stainless Steel · 353MA

353MA

Data under review

353MA is a silicon-, nitrogen- and cerium-alloyed heat-resistant austenitic stainless (a proprietary Alleima grade under UNS S35315) built on a 25Cr-21Ni base. It targets carburizing and oxidizing furnace atmospheres at 950–1150 °C, upgrading 310S parts that fail by scaling, creep or carburization.

DIN1.4854

AISIUNS S35315 (353MA)

CategoryStainless Steel

Chemical composition

Element	Content (%)
C	0.04–0.10
Si	1.20–2.00
Mn	≤0.80
P	≤0.040
S	≤0.030
Cr	24.00–26.00
Ni	20.00–22.00
N	0.12–0.20
Ce	0.03–0.08

Weight percent, per the governing standard ranges. Actual values per heat are on the mill certificate.

Properties

Delivery condition	Solution annealed
Tensile strength	≥550 MPa
Density	7.90 g/cm³
Max scaling temperature	~1150 °C

Heat treatment

Solution anneal 1100–1150 °C, rapid cool. The silicon-nitrogen-cerium package is tuned for oxidation resistance; avoid long holds in embrittling ranges during fabrication.

Equivalent grades

Standard	Designation
din	1.4854
aisi	UNS S35315 (353MA)

Compare side by side: 353MA vs 253MA · 353MA vs 310S

Equivalents overlap in chemistry and use but are not always identical — see our equivalents guide before substituting in certified designs.

Applications & Processing

Applications: Cement and lime kiln components, waste incineration, radiant and furnace tubes, annealing covers, petrochemical reformer parts.

Processing: Welds with matching or nickel-base fillers; the cerium-bearing oxide scale is self-repairing, but the material is notch-sensitive at room temperature after high-temperature service.

FAQ

353MA vs 253MA?: 253MA is a 21Cr-11Ni grade for oxidation/creep duty to ~1150 °C at lower alloy cost; 353MA carries far more nickel (20–22%) and chromium, adding carburization and thermal-fatigue resistance for the most severe furnace service.

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Source: ASTM A240 / maker published ranges (UNS S35315) · Last updated 2026-11-03. Data is indicative — verify critical values against the governing standard and mill certificate before use.