Product Description
Chemical Composition
| Cr |
Ni |
C |
Si |
Mn |
P |
S |
N |
Ce |
Fe |
| 20.0-22.0 |
10.0-12.0 |
0.05-0.10 |
1.40-2.00 |
≤0.08 |
≤0.04 |
≤0.03 |
0.14-0.20 |
0.03-0.08 |
Balance |
Mechanical Properties
| Grade |
Tensile Strength
ksi(MPa) |
Yield Strength
ksi(MPa) |
Elongation in 2", % |
Hardness Brinell |
Hardness Rockwell |
| 253SMA |
≥87(600) |
≥45(310) |
≥40 |
≤217HBW |
≤95HRB |
Application
- Pyrolysis Vessels
- Boiler Nozzles
- Corrugated Boxes
- Cyclones
- Bar Baskets
- Radiant Tubes
- Combustion chambers
Material Summary
Despite its lean nickel content, 253 MA offers an outstanding combination of creep strength and high resistance to oxidation, sulphidation and erosion/abrasion at extremely high temperatures. This makes the alloy more economical than most heat resistant alloys.
The high heat resistant properties of 253 MA are obtained by the tight control of micro alloy additions. Whilst the benefit of creep rupture strength is down to the combination of nitrogen, carbon and cerium, its superior oxidation resistance is a result of the combination of cerium and silicon.
Its strength at these temperatures is higher than that of alternatives such as Grade 310.
Are you a factory or a trading company?
We are a company with two mill and one warehouse,produce Stainless Steel/(Super)Duplex Steel/ Nickel Alloy seamless tube&pipes.
But we also can provide welded stainless steel pipes and pipe fittings, coils, sheets, bar, plates etc. if you need. Because we know this market well
Do you have any certificate?
We have approvals of ISO9001:2015,ISO14001:2015,ISO45001:2018, BV Ocean& Offshore Ship Classification Societies, GOST, TUV, PED AD2000 etc.
And will get ABS/NORSOK/DNV/CU-TR(EAC) soon.
What is your delivery time?
It mainly depends on your demanded volume and material grade. The time of delivery is usually around0.5- 1 month(1*40HT as usual).
We can send it out in 5 days if it has stock.
What is your payment terms?
Our usual payment term is 30% deposit and the rest against B/L. L/C is also acceptable. And the shipping terms are EXW,FOB, CFR,CIF.Whichever you like.
How can you guarantee the quality of my goods?
All material are 100% PMI tested and measured before shipping. We also accept third part inspection andEN10204.3.1B Mill test certificate for all materials.
How do you make our business long-term and good relationship?
1.We keep good quality and competitive price to ensure our customers benefit.
2. We respect every customer and we sincerely do business with them, sustain our service level before and after every deal.
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