Manufacturer, stockist and supplier · Supplying GCC, Southeast Asia, Europe, United States, United Kingdom & India

ramesh@brighttubes.in · +91 98200 74585

Stainless Steel · Tubes · ASTM A213 / A249 S30815

SS 253 MA Stainless Steel Tubes

In short: 253 MA tube to ASTM A213 / A249 S30815 is used for radiant tubes, recuperators and heat-recovery coils in oxidising atmospheres.

S30815
UNS number
7.8
density, g/cm³
3.1 / 3.2
EN 10204 certificates
4
SS 253 MA product forms
Quote SS 253 MA tubes →Sizes and weights
SS 253 MA tube weightCalculated at 7.8 g/cm³: 6.4×0.89 0.12 kg/m; 9.5×1.24 0.25 kg/m; 12.7×1.24 0.35 kg/m; 12.7×1.65 0.45 kg/m; 15.9×1.24 0.44 kg/m; 19.1×1.65 0.70 kg/m; 19.1×2.11 0.88 kg/m; 25.4×1.65 0.96 kg/m; 25.4×2.11 1.20 kg/m; 31.8×1.65 1.22 kg/m; 38.1×1.65 1.47 kg/m; 38.1×2.11 1.86 kg/m. SS 253 MA tube weight7.8 g/cm³ 6.4×0.89: 0.12 kg/m6.4×0.899.5×1.24: 0.25 kg/m9.5×1.2412.7×1.24: 0.35 kg/m12.7×1.2412.7×1.65: 0.45 kg/m12.7×1.6515.9×1.24: 0.44 kg/m15.9×1.2419.1×1.65: 0.70 kg/m19.1×1.6519.1×2.11: 0.88 kg/m19.1×2.1125.4×1.65: 0.96 kg/m25.4×1.6525.4×2.11: 1.20 kg/m25.4×2.1131.8×1.65: 1.22 kg/m31.8×1.6538.1×1.65: 1.47 kg/m38.1×1.6538.1×2.11: 1.86 kg/m38.1×2.11 1.9 OD × wall, mm · kg/m
Calculated values for estimating; actual weights vary within tolerances.

Why this combination

Why SS 253 MA in tubes

Lean alloy (21Cr-11Ni) with Si, N and CeExcellent oxidation resistance to about 1,100 °CCreep strength higher than SS 310S at many temperaturesResists spalling under thermal cycling

Radiant and recuperator tubes cycle hot and cold; 253 MA's adherent scale helps them last through cycling.

Thin walls should allow for scaling over the planned service life.

Specification

How to specify SS 253 MA tubes

OD 3 mm to about 127 mm (¼" to 5") typical, wall 0.5 mm to 12 mm; BWG or mm; straight lengths up to about 30 m, U-bent to drawing

SS 253 MA tubes ASTM A213 / A249 S30815
SS 253 MA tubes: ASTM A213 / A249 S30815
Specification
ASTM A213 / A249 S30815
UNS
S30815
EN / W.Nr.
1.4835
Order by
OD × wall, length

Sizes and weights

SS 253 MA tubes sizes, weighed at 7.8 g/cm³

Other sizes on request. For general tubes information, such as manufacturing routes and end finishes, see the tubes guide.

SS 253 MA tube weights at 7.8 g/cm³
OD mmWall mmkg/m
6.350.890.119
9.531.240.252
12.701.240.348
12.701.650.447
15.881.240.445
19.051.650.704
19.052.110.876
25.401.650.960
25.402.111.204
31.751.651.217
38.101.651.474
38.102.111.861
50.802.112.517
50.802.773.260

Chemistry

SS 253 MA composition

UNS
S30815
EN / W.Nr.
1.4835 · X9CrNiSiNCe21-11-2
Density
7.8 g/cm³
SS 253 MA Stainless Steel chemical composition, % (ASTM A240 (S30815))
ElementLimit, %Why it matters
C0.05 – 0.10
Mn0.80 max
P0.040 max
S0.030 max
Si1.40 – 2.00
Cr20.0 – 22.0
Ni10.0 – 12.0
N0.14 – 0.20
Ce0.03 – 0.08

Limits per ASTM A240 (S30815); other product forms and specifications differ slightly. Your order's specification and edition govern.

0%5%10%15%20%25%30% Si Cr Ni
Main alloying elements of SS 253 MA Stainless Steel: bars show the permitted range (ASTM A240 (S30815)).

Questions

About SS 253 MA tubes

Is 253 MA tube used in recuperators?

Yes, in high-temperature air preheaters and recuperators.

Can 253 MA tube be welded?

Yes, with matching 253 MA-type filler.

From enquiry to dispatch

How a SS 253 MA tubes order runs

  1. 01 EnquiryGrade, specification, size, quantity
  2. 02 ReviewChecked against your standard
  3. 03 InspectPMI, dimensions, TPI if required
  4. 04 CertifyEN 10204 3.1 / 3.2, heat traceable
  5. 05 ShipPacked and documented for the destination

Need SS 253 MA tubes?

Send size, quantity, specification and destination. We reply with availability, certificates and delivery.

Request a quote →SS 253 MA grade page
Request a Quote Call
WhatsApp