253MA Pipe 253MA Stainless Steel Tube S30815 Stainless Steel Tubing
ASTM A213 ASME SA 213 253MA Pipe S30815 / EN 10216-5 EN 10297-2 1.4835 Stainless Steel Pipe is Rare Earth Metals (REM) and lean austenitic heat resistant alloy with high strength and outstanding oxidation resistance. 253 MA maintains its heat resistant properties by advanced control of micro alloy additions. The use of rare earth metals in combination with silicon gives superior oxidation resistance up to 2000°F. Nitrogen, carbon and a dispersion of rare earth and alkali metal oxides combine to provide creep rupture strength comparable to the nickel base alloys. A wide variety of components requiring high strength at elevated temperature such as heat exchanger, kilns, stack dampers and oven components are common applications for 253 MA S30815.
253MA S30815 Stainless Steel Tube is a grade combining excellent service properties at high temperature with ease of fabrication. It resists oxidation at temperatures up to 1150°C and can provide superior service to Grade 310 in carbon, nitrogen and sulphur containing atmospheres. Another proprietary designation covering this grade is 2111HTR.
253MA S30815 Stainless Steel contains fairly low nickel content, which gives it some advantage in reducing sulphide atmospheres when compared to high nickel alloys and to Grade 310. The inclusion of high silicon, nitrogen and cerium contents gives the steel good oxide stability, high elevated temperature strength and excellent resistance to sigma phase precipitation.
The austenitic structure gives this grade excellent toughness, even down to cryogenic temperatures. These properties are specified for flat rolled product (stainless steel plate, sheet and coil) as Grade S30815 in ASTM A240/A240M. Similar but not necessarily identical properties are specified for other products such as pipe and bar in their respective specifications.
253MA S30815 Stainless Steel Pipe Grade Specification Comparison
Table 4. Grade specifications for 253MA grade stainless steel
| Grade | UNS No | British | British | EN | EN | Swedish | Japanese |
| – | – | BS | En | No | Name | SS | JIS |
| 253MA | S30815 | – | – | 1.4835 | X9CrNiSiNCe21-11-2 | 2368 | – |
These comparisons are approximate only. The list is intended as a comparison of functionally similar materials not as a schedule of contractual equivalents. If exact equivalents are needed original specifications must be consulted.
253MA S30815 Stainless Steel Pipe Possible Alternative Grades
Table 5. Possible alternative grades to 253MA stainless steel
| Grade | Why it might be chosen instead of 253MA |
| 310 | Carburising atmospheres require a higher nickel content |
| 304H | Lower cost alternative, provided the operating temperature is below about 800°C |
| Nickel Alloys | Carburising atmospheres or temperatures above the 1100 – 1150°C maximum of 253MA. |
253MA S30815 Stainless Steel Tube Chemical Composition
Typical compositional ranges for grade 253MA stainless steel tubing are given in table 1.
Table 1. Composition ranges for ASTM A213 253MA S30815 grade stainless steel
| Grade | – | C | Mn | Si | P | S | Cr | Ni | N | Ce |
| 253MA / S30815 | min. max. | 0.05 0.10 | – 0.80 | 1.40 2.00 | – 0.040 | – 0.030 | 20.0 22.0 | 10.0 12.0 | 0.14 0.20 | 0.03 0.08 |
253MA S30815 Stainless Steel Tube Mechanical Properties
Typical mechanical properties for grade 253MA stainless steels are given in table 2.
Table 2. 253MA S30815 Stainless Steel Tube Mechanical properties
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | Hardness |
| – | – | – | – | Rockwell B (HR B) max | Brinell (HB) max |
| 253MA | 600 | 310 | 40 | 95 | 217 |
253MA Stainless Steel Tube Physical Properties
Typical physical properties for grade 253MA stainless steels are given in table 3.
Table 3. Physical properties of 253MA grade stainless steel
| Grade | Density (kg/dm³) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (mm/m/°C) 0-100°C | Mean Coefficient of Thermal Expansion (mm/m/°C) 0-600°C | Mean Coefficient of Thermal Expansion (mm/m/°C) 0-1000°C | Thermal Conductivity (W/m.K) at 20°C | Thermal Conductivity (W/m.K) at 1000°C | Specific Heat 0-100°C (J/kg.K) | Electrical Resistivity (nW.m) |
| 253MA | 7.80 | 200 | 17.0 | 18.5 | 19.5 | 15.0 | 29.0 | 500 | 850 |
253 MA Stainless Steel Pipe Appliation:
| Stainless Steel 253MA Square Pipes uses in Food Processing Industry |
| Stainless Steel Welded 253MA Pipe uses in Fabrication Industry |
| Stainless Steel TP253MA Pipes uses in Oil and Gas Industry |
| S30815 SS Round Pipes uses in Chemical Industry |
| Grade 253MA Stainless Steel Pipe uses in Plumbing |
| TP253MA SS Pipe uses in General Purpose Applications |
| Stainless Steel TP 253MA ERW Pipe uses in Heating |
| SS 253MA Seamless Pipe uses in Water Supply Systems |
| ASTM A312 TP 253MA Stainless Steel Pipes uses in Power Plant |
| SS 253MA HR Pipes uses in Paper & Pulp Industry |
| SS TP 253MA Pipes uses in Defence Industry |
| SS TP 253MA Pipes uses in Construction industry |
253MA Stainless Steel Tube Corrosion Resistance
Although not designed for aqueous corrosion resistance the high chromium and nitrogen contents give the grade a pitting resistance approximating that of 316. 253MA does however have a high carbon content so is highly susceptible to sensitisation ferom welding or service exposure.
253MA Stainless Steel Pipe Heat Resistance
Oxidation – excellent resistance to air, at temperatures up to 1150°C. At high temperatures the steel quickly forms a thin, highly adherent and elastic oxide. This oxide gives good protection even under cyclic conditions.
Carburisation – Under oxidising conditions this grade can perform well, but alloys with higher nickel content are preferred if the atmosphere is reducing.
Sulphidation – good resistance to sulphur-bearing gases in an oxidising atmosphere, even if only traces of oxygen are present. Reducing gases prevent the protective oxide forming.
253MA Stainless Steel has high strength at elevated temperatures so is often used for structural and pressure-containing applications at temperatures above about 500°C and up to about 900°C. Its strength at these temperatures is higher than that of alternatives such as Grade 310.
253MA Stainless Steel will become sensitised in the temperature range of 425-860°C; this is not a problem for high temperature applications, but will result in reduced aqueous corrosion resistance.
Grade 253 MA Stainless Steel Pipe Specification :
Specifications : ASTM A312 / A358, ASME SA312 / A358
Standard : DIN, ASTM, BS and all International Standards
Pipe Size : 1/2″ to 16″NB
ERW Pipe Size : 1/2″ to 24″NB
EFW Pipe Size : 6″NB to 100″NB
Type : Seamless, ERW, Welded, Fabricated, LSAW.
Form : Round, Square, Rectangular, Hydraulic etc.
Length : Single Random, Double Random and Cut Lenght.
End : Plain End, Beveled End, Threaded etc.
Grade 253 MA Stainless Steel Tube Specification :
Specifications : ASTM A213 / A269 / A358, ASME SA213 / SA269 / SA358
Standard : DIN, ASTM, BS and all International Standards
Tube Size : 1/8″ to 30″NB
Thickness : 0.35mm to 6.35mm OD in thickness ranging from 0.1mm to 1.2mm
Type : Seamless, ERW, Welded, Fabricated, LSAW.
Form : Round, Square, Rectangular, Hydraulic etc.
Length : Single Random, Double Random and Cut Lenght.
End : Plain End, Beveled End, Threaded etc.
Stainless Steel 253MA Pipes Export Destinations
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