254 SMO / 1.4547 / UNS S31254 / Alloy 254 SMO

254 SMO is a high-alloy austenitic stainless steel, developed for use in sea water and other aggressive environments containing chloride.

Properties of Alloy 254 SMO:
• Great resistance against pitting corrosion and crevice corrosion, PRE = ≥42,5
• High resistance against general corrosion and stress corrosion
• Higher durability than conventional austenitic stainless steel types
• Good weldability

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Applications of 254 SMO

✓ Sea-water systems such as sea-water cooling, cooling water piping, ballast water systems, fire-extinguishing systems, etc.
✓ Hydraulic and instrumentation hoses
✓ Equipment in pulp bleaching facilities
✓ Components for gas cleaning systems
✓ Tanks and pipes for chemicals with high halide levels

If you have questions about 254 SMO / 1.4547, our specialists are happy to help!

Marcel Saas knows all there is to know about alloys and their various quality grades. He would love to help you come to the right decision so that the offer you receive is based on the right information, enabling you to start making headway on your project right away.

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254 SMO material

254 SMO material consists of:
• Material number 1.4547
• X1CrNiMoCuN20-18-7
• UNS S31254

View our full range of SMO 254 welded pipes, SMO 254 seamless pipes and SMO 254 weld fittings.

Popular pipes with quality standard 254 SMO / 1.4547 / UNS S31254 / Alloy 254 SMO

Popular fittings with quality standard 254 SMO / 1.4547 / UNS S31254 / Alloy 254 SMO

RVS_Lasbocht_90_ASTM_gelast.jpg
Elbow 90° ASTM A-403, welded LR

Grades: 1.4547, 1.4301, 1.4306, 1.4307, 1.4828, 1.4845, 1.4401, 1.4432, 1.4404, 1.4571, 1.4541, 1.4539, 1.4501, 1.4462

RVS_lasbocht_ASTM_A403_45gr_naadloos.jpg
Elbow 45° ASTM A-403, welded LR

Grades: 1.4547, 1.4301, 1.4306, 1.4307, 1.4828, 1.4845, 1.4401, 1.4432, 1.4404, 1.4571, 1.4541, 1.4539, 1.4501, 1.4462

RVS-ASTM-A403-lasbocht-180g.jpg
Elbow 180° ASTM A-403, welded LR

Grades: 1.4547, 1.4301, 1.4306, 1.4307, 1.4828, 1.4845, 1.4401, 1.4432, 1.4404, 1.4571, 1.4541, 1.4539, 1.4501, 1.4462

RVS_ASTM_A403_Lasverloop_concentrisch.jpg
Concentric reducer ASTM A-403, welded

Grades: 1.4547, 1.4301, 1.4306, 1.4307, 1.4828, 1.4841, 1.4845, 1.4401, 1.4432, 1.4404, 1.4571, 1.4541, 1.4539, 1.4501, 1.4462

RVS_ASTM_A403_Lasverloop_excentrisch.jpg
Eccentric reducer ASTM A-403, welded

Grades: 1.4547, 1.4301, 1.4306, 1.4307, 1.4828, 1.4841, 1.4845, 1.4401, 1.4432, 1.4404, 1.4571, 1.4541, 1.4539, 1.4501, 1.4462

RVS_Lasbodem_ASTM.jpg
End cap ASTM A-403

Grades: 1.4547, 1.4301, 1.4306, 1.4307, 1.4828, 1.4841, 1.4845, 1.4401, 1.4432, 1.4404, 1.4571, 1.4541, 1.4539, 1.4501, 1.4462

RVS_T-stuk_ASTM-gelast.jpg
T-piece ASTM A-403, welded

Grades: 1.4547, 1.4301, 1.4306, 1.4307, 1.4828, 1.4845, 1.4401, 1.4432, 1.4404, 1.4571, 1.4541, 1.4539, 1.4501, 1.4462

RVS_VerloopT-stuk_ASTM-A403.jpg
Reducing T-piece ASTM A-403, welded

Grades: 1.4547, 1.4301, 1.4306, 1.4307, 1.4828, 1.4845, 1.4401, 1.4432, 1.4404, 1.4571, 1.4541, 1.4539, 1.4501, 1.4462

RVS_Stubend_ASTM_A403.jpg
Stub End ASTM A-403, welded

Grades: 1.4547, 1.4301, 1.4306, 1.4307, 1.4828, 1.4845, 1.4401, 1.4432, 1.4404, 1.4571, 1.4541, 1.4539, 1.4501, 1.4462

RVS_ASTM_A403_kapbeugel.jpg
ASTM A-403 Double clips

Grades: 1.4547, 1.4301, 1.4306, 1.4307, 1.4828, 1.4845, 1.4401, 1.4432, 1.4404, 1.4571, 1.4541, 1.4539, 1.4501, 1.4462

RVS_ASTM_A403_pijpbeugel.jpg

Grades:

RVS_Lasbocht_EN10253_gelast.jpg
Elbow 90° EN 10253-4 type A, welded

Grades: 1.4547, 1.4301, 1.4307, 1.4828, 1.4845, 1.4401, 1.4432, 1.4404, 1.4571, 1.4541, 1.4539, 1.4501, 1.4462

RVS-EN10253-lasbocht-45gr.jpg
Elbow 45° EN 10253-4 type A, welded

Grades: 1.4547, 1.4301, 1.4307, 1.4828, 1.4841, 1.4845, 1.4401, 1.4432, 1.4404, 1.4571, 1.4541, 1.4539, 1.4501, 1.4462

RVS_EN10253_Lasverloop_concentrisch.jpg (1)
EN 10253 Concentric reducer L=3(D-d), welded

Grades: 1.4547, 1.4301, 1.4307, 1.4828, 1.4841, 1.4845, 1.4401, 1.4432, 1.4404, 1.4571, 1.4541, 1.4539, 1.4501, 1.4462

RVS_EN10253_Lasverloop_excentrisch.jpg
EN 10253 Eccentric reducer L=3(D-d), welded

Grades: 1.4547, 1.4301, 1.4307, 1.4828, 1.4845, 1.4401, 1.4432, 1.4404, 1.4571, 1.4541, 1.4539, 1.4501, 1.4462

RVS_Boordring.jpg
EN 10253 Collar

Grades: 1.4547, 1.4301, 1.4307, 1.4828, 1.4841, 1.4845, 1.4401, 1.4432, 1.4404, 1.4571, 1.4541, 1.4539, 1.4501, 1.4462

RVS_Lasbodem_EN10253.jpg
End cap EN 10253-4 type A

Grades: 1.4547, 1.4301, 1.4307, 1.4828, 1.4845, 1.4401, 1.4432, 1.4404, 1.4571, 1.4539, 1.4501, 1.4462

RVS_T-stuk_EN10253_uitgeh.jpg
T-piece EN 10253-4 type A, without branch

Grades: 1.4547, 1.4301, 1.4307, 1.4828, 1.4841, 1.4845, 1.4401, 1.4432, 1.4404, 1.4571, 1.4541, 1.4539, 1.4501, 1.4462

RVS_verloop_T-stuk_uitgehalst_EN10253.jpg
Reducing T-piece EN 10253-4 type A, without branch

Grades: 1.4547, 1.4301, 1.4307, 1.4828, 1.4845, 1.4401, 1.4432, 1.4404, 1.4571, 1.4541, 1.4539, 1.4501, 1.4462