Stainless Steel 253MA Pipes Manufacturer & Supplier
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Midland Alloys Inc. is a reputable Indian manufacturer and international supplier of stainless steel pipes, providing high end options for resistance to corrosion and extreme heat. Excellent oxidation resistance up to 2000°F is provided by the lean austenitic structure and sophisticated micro alloying techniques used in the design of stainless steel 253MA pipes. In order to withstand high temperatures, this alloy which is UNS S30815 combines silicon and rare earth elements. Nitrogen and carbon also increase creep strength, making it comparable to alloys based on nickel. These pipes have a wide range of uses, from industrial ovens and kiln linings to heat exchangers, making them perfect for processes needing high temperature stability. The qualities of 253MA stainless steel set it apart as an industry standard for performance and longevity under extreme heat.
Benefits of ASTM A312 Stainless Steel 253 MA Seamless Pipes
- Withstands scaling and oxidation at temperatures up to 2000°F.
- Durability under stress is improved by high creep rupture strength.
- Better resistance to corrosion in oxidizing environments
- Excellent resistance to thermal fatigue in cyclic conditions
- Strong mechanical properties at high temperatures
- An affordable substitute for alloy based on nickel
- Easy fabrication is ensured by formability and weldability.
- Long service life minimizes downtime for maintenance.
Difference Between Stainless Steel 253MA Pipes vs SS 316L Pipes
The composition and heat resistance of 253MA stainless steel pipes are very different from those of SS 316L pipes. The high-temperature oxidation resistance and creep strength of 253 MA [S30815] Pipes are superior to those of SS 316L, despite the latter’s superior corrosion resistance in chloride environments. The 253MA alloy contains higher silicon, nitrogen and rare earth metals allowing performance stability at temperatures where 316L fails structurally. Additionally, 253MA stainless steel equivalent properties offer better scaling resistance beyond 1100°C, unlike SS 316L which is limited to moderate heat applications.
Technical Specifications of Stainless Steel 253MA Pipes
Seamless Pipe OD : 1/8 -12" NPS
Welded Pipe OD : 6.35 to 114.3 mm
EFW Pipe Size : 6″ NB – 24″ NB
ASTM A312, A358 / ASME SA312, SA358
Seamless, ERW, Welded, Fabricated
Round, Square, Rectangular, Hydraulic Etc
Single Random, Double Random & Cut Length.
Plain End, Beveled End, Treaded
SCH5, SCH10, SCH20, SCH30, SCH40, STD, SCH80, SCH 80S, SCH60, SCH80, SCH120, SCH140, SCH160, SCH XXS, SCH XS
No. 2B - Mill finish/ Matte finish, No.8 - Mirror finish, No. 4 - Brushed finish, Bright, Annealing, Polished, Mirror
Types of Stainless Steel 253MA Pipes
Manufacturing Types
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Seamless PipeWeld-free, perfect for even strength and sizing precision.
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Welded PipeWelded from flat-rolled steel, widely used where economy and large sizes are required.
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ERW PipeElectric Resistance Welded (ERW) pipes provide neat, high quality weld seams and are ideal for medium-pressure applications.
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EFW PipeElectric Fusion Welded (EFW) pipes are welded by fusion welding, usually applied in larger diameters and high-demand processes.
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LSAWLongitudinal Submerged Arc Welded (LSAW) pipes provide straight seam welding which is favored for thick-wall pieces and structural requirements.
Pipe Forms
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Round PipeThe most common shape for fluid and gas transport.
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Square PipeUsed in architectural and structural applications requiring angular profiles.
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Rectangular PipeProvides greater strength in load-bearing regions and flat structures.
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Hydraulic PipeDesigned to provide precise dimensional control for fluid systems under pressure.
Contact us today to discuss how Stainless Steel 253MA Pipes can benefit your application. Whether you need guidance in selecting the right pipes or have specific requirements, our team of experts is here to help you find the optimal solution.
Technical Details & Delivery Condition
| C | Mn | P | S | Si | Cr | Ni | Mo | N | Cu | Nb | Fe |
| ≤ 0.02 | ≤ 0.50 | ≤ 0.03 | ≤ 0.02 | 0.50 – 1.00 | 21.0 – 23.0 | 11.0 – 13.0 | 1.0 – 2.0 | 0.10 – 0.25 | 0.30 – 0.50 | 0.30 – 0.60 | Balance |
| Tensile Strength (Rm) | Yield Strength (0.2% Rp) | Elongation (% in 50 mm gauge length) | Hardness (HRB) | Hardness (HB) |
| 520 – 700 MPa | 205 – 300 MPa | 35 – 40% | 80 – 90 | 180 – 200 |
| AISI / ASTM | EN / DIN | JIS (Japan) | UNS | BS (British) | ISO |
| 253MA | 1.4980 | SUS 253MA | S25350 | 253MA | 253MA |
Stainless Steel Pipe Grades We Also Offer
Stainless Steel 253MA Pipe Dimensions
| Stainless Steel OD mm | Pipe WT mm | in. | Sch | Kg/m |
| 13.72 | 1.65 | 1/4 | 10S | 0.50 |
| 13.72 | 2.24 | 1/4 | 40S | 0.64 |
| 13.72 | 3.02 | 1/4 | 80S | 0.81 |
| 17.15 | 1.65 | 3/8 | 10S | 0.64 |
| 17.15 | 2.31 | 3/8 | 40S | 0.86 |
| 17.15 | 3.20 | 3/8 | 80S | 1.12 |
| 21.34 | 2.11 | 1/2 | 10S | 1.02 |
| 21.34 | 2.77 | 1/2 | 40S | 1.29 |
| 21.34 | 3.73 | 1/2 | 80S | 1.65 |
| 26.67 | 2.11 | 3/4 | 10S | 1.30 |
| 26.67 | 2.87 | 3/4 | 40S | 1.71 |
| 26.67 | 3.91 | 3/4 | 80S | 2.23 |
| 33.40 | 2.77 | 1 | 10S | 2.13 |
| 33.40 | 3.38 | 1 | 40S | 2.54 |
| 33.40 | 4.55 | 1 | 80S | 3.29 |
| 33.40 | 6.35 | 1 | 160 | 4.30 |
| 42.16 | 2.77 | 1¼ | 10S | 2.73 |
| 42.16 | 3.56 | 1¼ | 40S | 3.44 |
| 42.16 | 4.85 | 1¼ | 80S | 4.53 |
| 42.16 | 6.35 | 1¼ | 160 | 5.69 |
| 48.26 | 2.77 | 1½ | 10S | 3.16 |
| 48.26 | 3.68 | 1½ | 40S | 4.11 |
| 48.26 | 5.08 | 1½ | 80S | 5.49 |
| 60.33 | 2.77 | 2 | 10S | 3.99 |
| 60.33 | 3.91 | 2 | 40S | 5.52 |
| 60.33 | 5.54 | 2 | 80S | 7.60 |
| 60.33 | 8.74 | 2 | 160 | 11.29 |
| 73.03 | 3.05 | 2½ | 10S | 5.35 |
| 73.03 | 5.16 | 2½ | 40S | 8.77 |
| 73.03 | 7.01 | 2½ | 80S | 11.59 |
| 88.90 | 3.05 | 3 | 10S | 6.56 |
| 88.90 | 5.49 | 3 | 40S | 11.47 |
| 88.90 | 7.62 | 3 | 80S | 15.51 |
| 88.90 | 11.13 | 3 | 160 | 21.67 |
| 101.60 | 3.05 | 3½ | 10S | 7.53 |
| 101.60 | 5.74 | 3½ | 40S | 13.78 |
| 101.60 | 8.08 | 3½ | 80S | 18.92 |
| 114.30 | 3.05 | 4 | 10S | 8.50 |
| 114.30 | 6.02 | 4 | 40S | 16.32 |
| 114.30 | 8.56 | 4 | 80S | 22.67 |
| 114.30 | 13.49 | 4 | 160 | 34.05 |
| 141.30 | 6.55 | 5 | 40S | 22.10 |
| 141.30 | 9.53 | 5 | 80S | 31.44 |
| 141.30 | 15.88 | 5 | 160 | 49.87 |
| 168.28 | 3.40 | 6 | 10S | 14.04 |
| 168.28 | 7.11 | 6 | 40S | 28.69 |
| 168.28 | 10.97 | 6 | 80S | 43.21 |
| 168.28 | 14.27 | 6 | 120 | 54.75 |
| 168.28 | 18.26 | 6 | 160 | 68.59 |
| 219.08 | 8.18 | 8 | 40S | 43.20 |
| 219.08 | 12.70 | 8 | 80S | 65.63 |
| 219.08 | 18.23 | 8 | 120 | 91.30 |
| 219.08 | 23.01 | 8 | 160 | 112.97 |
Stainless Steel 253MA Thickness Chart
| Nominal size [inches] | Outside diameter [inches] | Outside diameter [mm] | Wall thickness [inches] | Wall thickness [mm] | Weight [lb/ft] | Weight [kg/m] |
| 1/8 | 0.405 | 10.3 | 0.095 | 2.41 | 0.31 | 0.47 |
| 1/4 | 0.54 | 13.7 | 0.119 | 3.02 | 0.54 | 0.8 |
| 1/2 | 0.84 | 21.3 | 0.147 | 3.73 | 1.09 | 1.62 |
| 3/4 | 1.05 | 26.7 | 0.154 | 3.91 | 1.47 | 2.2 |
| 1 | 1.315 | 33.4 | 0.179 | 4.55 | 2.17 | 3.24 |
| 1 1/4 | 1.66 | 42.2 | 0.191 | 4.85 | 3 | 4.47 |
| 1 1/2 | 1.9 | 48.3 | 0.2 | 5.08 | 3.63 | 5.41 |
| 2 | 2.375 | 60.3 | 0.218 | 5.54 | 5.02 | 7.48 |
| 2 1/2 | 2.875 | 73 | 0.276 | 7.01 | 7.66 | 11.41 |
| 3 | 3.5 | 88.9 | 0.3 | 7.62 | 10.25 | 15.27 |
| 3 1/2 | 4 | 101.6 | 0.318 | 8.08 | 12.5 | 18.63 |
| 4 | 4.5 | 114.3 | 0.337 | 8.56 | 14.98 | 22.32 |
| 5 | 5.563 | 141.3 | 0.375 | 9.53 | 20.78 | 30.97 |
| 6 | 6.625 | 168.3 | 0.432 | 10.97 | 28.57 | 42.56 |
| 8 | 8.625 | 219.1 | 0.5 | 12.7 | 43.39 | 64.64 |
| 10 | 10.75 | 273 | 0.594 | 15.09 | 64.43 | 96.01 |
| 12 | 12.75 | 323.8 | 0.688 | 17.48 | 88.63 | 132.08 |
| 14 | 14 | 355.6 | 0.75 | 19.05 | 106.13 | 158.1 |
| 16 | 16 | 406.4 | 0.844 | 21.44 | 136.61 | 203.53 |
| 18 | 18 | 457 | 0.938 | 23.83 | 170.92 | 254.55 |
| 20 | 20 | 508 | 1.031 | 26.19 | 208.87 | 311.17 |
| 24 | 24 | 610 | 1.125 | 30.96 | 296.58 | 442.08 |
How SS 253MA Pipes Are Manufactured
Round Bar
Analytic
Cut to Length
Centering
Heating
Perforation
Inspection of Size
Pickling
Inspection of Surface
Lubricating
Cold Drawing (Cold Rolling)
Degreasing
Annealing
Straightening
Cut
Pickling / Passivating
Inspection
Analytic
Marking
Packing & Shipping
Applications of ASTM A312 UNS S30815 253MA Stainless Steel Pipes
ASTM A312 UNS S30815 253MA stainless steel pipes are widely utilised across industries that demand extreme heat tolerance and structural integrity. In the petrochemical and oil & gas sectors these pipes handle exhaust systems and reformer tubes. They are used in boiler components and superheater tubes in power plants and energy facilities. Their resistance to oxidation in heating chambers and reactor vessels is advantageous to the chemical and pharmaceutical industries. They are necessary in pulp and paper for bleaching equipment in food processing for furnaces and baking elements and in aerospace for jet engine exhausts. Refineries use 1.4835 pipes in catalytic crackers and flue gas systems.
Why Choose Midland Alloys Inc. for Stainless Steel 253 MA [S30815] Pipes
One of India’s top producers and exporters of premium stainless steel 253MA pipes, Midland Alloys Inc. is renowned for its accurate manufacturing that complies with ASTM A312 and EN standards. With choices for custom length, OD, wall thickness, surface finish, and end preparation our ISO certified facilities guarantee dimensional accuracy. We ship to the Gulf, Europe, Southeast Asia and Africa, among other places. Each RA 253 MA seamless pipe is subjected to internal testing, which includes hydro, PMI and UT. There are also mill test certificates (MTCs) confirming the chemical and mechanical makeup of 253 MA. We provide fast dispatch and technical support for both small batch and large scale order. All pipes are marked as per ASTM/ASME specifications like ASTM A312 /ASTM SA312 and supplied with certified MTCs for chemical and mechanical compliance.
FAQs – Stainless Steel 253MA Pipes
253MA combines excellent high-temperature strength, oxidation resistance up to 2000°F, and good weldability.
EN 1.4835, UNS S30815, and Outokumpu RA 253 MA are equivalent designations.
It is employed in industrial settings with high temperatures, such as heat exchangers, kilns, and furnaces.
While 316L works better in environments with a lot of chloride 253MA has better resistance to high temperatures.
Yes, the addition of silicon and rare earth elements gives it good resistance to carburizing atmosphere.
With a hardness of roughly HRB 95/HB 217, strength is guaranteed without sacrificing workability.
Yes, they offer excellent weldability with standard austenitic welding methods and fillers.
