Bar and Rod
Plate and Sheet
Strip
Pipe and Tube
Wire
Welding
Powder Material
Cast Products
Forged Products
Fittings
Fastening
Round Bar:
φ2–500 mm, 1–6 m length
Flat/Square Bar:
4–100 mm thickness/width
Hex Bar:
A/F 3–100 mm
Hollow Bar:
OD 20–300 mm
Sheet:
0.3–6 mm thickness
Medium Plate:
6–25 mm thickness
Heavy Plate:
25–100 mm thickness
Standard Strip:
0.05–3 mm thick,
10–600 mm wide
Precision strip:
0.01–0.5 mm thick,
tight tolerance ±0.005 mm
Foil:
0.005–0.1 mm thick
Seamless Tube:
OD 6–450 mm,
WT 1–50 mm,
1–12 m length
Welded Tube:
OD 10–600 mm,
WT 1–20 mm
Capillary Tube:
OD 1–10 mm,
WT 0.1–2 mm
Wire Form:
Cold Drawn Wire,
Bright Wire,
Spring Wire,
Fine Wire,
Ultra-fine Wire
General Diameter:
φ0.1–10 mm
Coil Weight:
50–500 kg,
customizable tolerance
Solid Wire:
φ0.8–4.0 mm
Flux-cored Wire:
φ1.2–4.0 mm
Welding Rod:
φ2.0–5.0 mm
Powder Form:
AM 3D Printing Powder,
Spherical Powder,
Gas-atomized Powder,
Water-atomized Powder
Particle Size:
10–150 μm
Sphericity:
≥90% for AM grade
Cast Ingot:
φ200–800 mm
Precision Casting:
min wall 0.5 mm
Cast Pipe:
OD 100–600 mm,
WT 10–50 mm
Forged Bar:
Φ35–500 mm
Forged Ring:
OD 200–2000 mm
Forging Weight:
1–5000 kg
Fittings Form:
Elbow, Tee, Reducer, Flange, Cap, Outlet, Lap Joint
Size range:
1/2''–24'' (DN15–DN600)
Wall thickness:
Sch10–Sch160, STD, XS, XXS
Pressure Class:
150–2500 LB
Fastening Form:
Bolt, Nut, Screw, Stud, Washer, Pin, Rivet
Metric: M3–M64
Imperial: #4–2.5''
Length: 6–500 mm
153 MA is a heat-resistant austenitic chromium-nickel stainless steel based on the 18Cr-9Ni (304-type) composition but with increased silicon and nitrogen contents and microalloyed with rare-earth metals (cerium), which together raise its maximum service temperature in dry air to about 1000 °C. This datasheet presents the material within the American standard system.
It is positioned between the standard 304-type grade (max ~800 °C) and the more highly-alloyed 253 MA grade (max ~1150 °C), offering substantially better high-temperature performance than 304 at a lower alloy content and cost than the higher grades. The cerium and silicon improve the stability and adherence of the protective oxide scale, while the nitrogen provides solid-solution strengthening and stabilises the austenite; together they give good oxide stability, resistance to sigma-phase precipitation and good strength at high temperature. The fully austenitic structure also provides excellent toughness down to cryogenic temperatures. Optimum performance is obtained in the range about 600–950 °C, where creep strength is usually the dimensioning factor.
Typical applications include industrial-furnace components, radiant tubes and muffles, heat-treatment fixtures and conveyor parts, automotive exhaust and emission-control components, heat exchangers and recuperators, and other equipment operating at elevated temperature. As with other austenitic grades, resistance is best in oxidizing atmospheres; resistance to oxidizing sulphur-bearing gases is limited.
| Property | Value | Unit |
|---|---|---|
| Density | 7.8 | g/cm³ |
| Melting range | 1400–1450 | °C |
| Maximum service temperature (oxidizing, dry air) | ~1000 | °C |
| Young's modulus (20 °C) | 200 | GPa |
| Thermal conductivity (20 °C) | ~15 | W/m·K |
| Coefficient of thermal expansion (20–100 °C) | ~17 | µm/m·°C |
| Electrical resistivity (20 °C) | ~0.78 | µΩ·m |
| Magnetic response | Non-magnetic (austenitic) | — |
| Element | Symbol | Value | Role in Alloy |
|---|---|---|---|
| Iron | Fe | Balance | Base element |
| Chromium | Cr | 18.0–20.0 | Oxidation resistance |
| Nickel | Ni | 9.0–11.0 | Austenite stability |
| Silicon | Si | 1.0–2.0 | Oxide-scale stability / oxidation resistance |
| Nitrogen | N | 0.12–0.20 | Solid-solution strengthening; austenite stability |
| Cerium | Ce | ~0.03–0.08 | Improves oxide-scale adherence (rare earth) |
| Carbon | C | ≤0.05 | Controlled |
| Manganese | Mn | ≤0.80 | Austenite stabiliser |
| Phosphorus | P | ≤0.040 | Residual impurity |
| Sulphur | S | ≤0.015 | Residual impurity |
Typical room-temperature properties, solution-annealed condition.
| Property | Value | Source |
|---|---|---|
| Ultimate tensile strength | ~550–750 MPa | Annealed |
| 0.2% proof strength (yield) | ~290 MPa min | Annealed |
| Elongation at break | ~40 % | Annealed |
| Hardness | ~≤200 HB | Annealed |
The nitrogen addition gives higher strength than the unmodified 304-type grade, and the fully austenitic structure provides excellent toughness from cryogenic to elevated temperatures. Optimum service is ~600–950 °C. Values are typical or specified minima; confirm against the mill test certificate.
| Environment | Performance | Notes |
|---|---|---|
| Oxidation / scaling (dry air) | Excellent | To ~1000 °C (vs ~800 °C for 304-type) |
| Oxide-scale stability | Excellent | Cerium + silicon |
| Sigma-phase resistance | Good | Cerium / nitrogen |
| High-temperature strength / creep | Good | Optimum ~600–950 °C |
| Cryogenic toughness | Excellent | Fully austenitic |
| Oxidizing sulphur-bearing gases | Limited | As noted by manufacturer |
| Embrittlement (600–900 °C, prolonged) | Caution | Possible on long exposure |
An austenitic stainless steel; it cannot be hardened by heat treatment. Strength is increased only by cold work.
Solution Anneal approximately 1050–1150 °C, followed by rapid cooling (water quench or rapid air), to dissolve carbides and produce a uniform austenitic structure with optimum oxidation and creep behaviour.
Prolonged exposure in the ~600–900 °C range can lead to some embrittlement; ductility can be restored by re-solution-annealing followed by rapid cooling. The cerium and nitrogen additions help resist sigma-phase precipitation.
Has good weldability and can be joined by submerged-arc, plasma-arc, flux-cored-arc, shielded-metal-arc, gas-tungsten-arc and gas-metal-arc processes. A matching or over-alloyed heat-resistant filler is used; preheating is not required.
| Process | Applicability | Notes |
|---|---|---|
| GTAW / TIG · GMAW / MAG | Good | Matching/over-alloyed heat-resistant filler |
| SAW · PAW · FCAW · SMAW | Good | Heat-resistant consumable |
No preheat required. Keep heat input controlled; solution anneal after welding where maximum high-temperature performance is required.
Machining Guidelines
| Parameter | Recommendation |
|---|---|
| Machinability | As for austenitic stainless; rigid tooling, positive feeds |
| Work hardening | High; sharp tooling, avoid dwelling |
| Coolant | Ample flood coolant |
Forming Processes
| Process | Notes |
|---|---|
| Hot working | ~1100–1150 °C; solution anneal after |
| Cold forming | Readily formed; work-hardens |
| Solution anneal | ~1050–1150 °C, rapid cool |
| Industry | Typical Components | Key Requirements |
|---|---|---|
| Heat treating / furnaces | Furnace components, radiant tubes, muffles, fixtures | Oxidation resistance to ~1000 °C |
| Automotive | Exhaust and emission-control components | Heat + oxidation resistance |
| Power / process | Heat exchangers, recuperators | High-temperature strength + creep |
| Conveyors / fixtures | Heat-treatment baskets, conveyor parts | Creep + thermal cycling |
| Cement / mineral | High-temperature process equipment | Oxidation + creep resistance |
| Cryogenic | Low-temperature equipment | Austenitic toughness |
| Product Form | Standard | Notes |
|---|---|---|
| Plate, sheet and strip | ASTM A240 | S30415 |
| Bar and shapes | ASTM A276 / A479 | — |
| Seamless / welded pipe and tube | ASTM A312 / A213 / A249 | — |
| Forgings / fittings | ASTM A182 / A403 | — |
| Wire | ASTM A580 | — |
Heat-resistant Si-N-Ce austenitic stainless steel (19Cr-10Ni). UNS S30415; ASTM A240 / A276 / A312. Tradename / type: 153 MA.
| Grade | Nominal | Max °C | Best Used For |
|---|---|---|---|
| 153 MA | 19Cr-10Ni-Si-N-Ce | ~1000 | Heat-resistant 304 upgrade (Si-N-Ce) |
| 304H | 18Cr-9Ni | ~800 | Standard heat-resistant austenitic |
| 253 MA | 21Cr-11Ni-Si-N-Ce | ~1150 | Higher-temp Si-N-Ce grade |
| 309S | 23Cr-13Ni | ~1000 | Higher-Cr/Ni heat-resistant |
| 310S | 25Cr-20Ni | ~1050–1100 | High-Cr/Ni heat-resistant |
+86 021 3355 6635
+86 133 7189 7780
zcalloy1001@gmail.com
Building E265, No. 2, Lane 158, Gangye Road, Xiaokunshan Town, Songjiang District, Shanghai
