ASTM A554 Welded Stainless Steel Mechanical Tubing

  • Grade: MT-429, MT-430, MT-430-Ti, 409, 434, 436, 439, 444, 410S, S31803, S32101, S32205, S32304, S32550, S32750, S32760, MT-301, MT-302, MT-304, MT-304L, MT-305, MT-309S, MT-309S-Cb, MT-310S, MT-316, MT-316L, S31655, MT-317, MT-321, MT-330, and MT-347.
  • Shapes: Round, Square, Rectangular
  • Length: 3000-12000mm
  • Type: Welded

Features

ASTM A554/A554M Seamless Stainless Steel Mechanical Tubing

Chemical Requirements of Austenitic Stainless Steels
UNS No. Grade C (%) Mn (%) P (%) S (%) Si (%) Ni (%) Cr (%) Mo (%)
MT-301 0.15 2.00 0.045 0.030 1.00 6.0-8.0 16.0-18.0
MT-302 0.15 2.00 0.045 0.030 1.00 8.0-10.0 17.0-19.0
MT-304 0.08 2.00 0.045 0.030 1.00 8.0-11.0 18.0-20.0
MT-304L 0.035 2.00 0.045 0.030 1.00 8.0-13.0 18.0-20.0
MT-305 0.12 2.00 0.045 0.030 1.00 10.0-13.0 17.0-19.0
MT-309S 0.08 2.00 0.045 0.030 1.00 12.0-15.0 22.0-24.0
MT-309S-Cb 0.08 2.00 0.045 0.030 1.00 12.0-15.0 22.0-24.0
MT-310S 0.08 2.00 0.045 0.030 1.00 19.0-22.0 24.0-26.0
MT-316 0.08 2.00 0.045 0.030 1.00 10.0-14.0 16.0-18.0 2.0-3.0
MT-316L 0.035 2.00 0.045 0.030 1.00 10.0-14.0 16.0-18.0 2.0-3.0
S31655 0.030 2.00 0.045 0.015 1.00 8.0-9.5 19.5-21.5 0.5-1.5
MT-317 0.08 2.00 0.045 0.030 1.00 11.0-14.0 18.0-20.0 3.0-4.0
MT-321 0.08 2.00 0.045 0.030 1.00 9.0-13.0 17.0-20.0
MT-330 0.15 2.00 0.040 0.030 1.00 33.0-36.0 14.0-16.0
MT-347 0.08 2.00 0.045 0.030 1.00 9.0-13.0 17.0-20.0
Chemical Requirements of Ferritic Stainless Steels
Material Grade C Mn P S Si Ni Cr Mo Ti Nb N
MT-429 0.120 1.00 0.040 0.030 1.00 0.50 max 14.0–16.0
MT-430 0.120 1.00 0.040 0.030 1.00 0.50 max 16.0–18.0
MT-430-Ti 0.100 1.00 0.040 0.030 1.00 0.075 max 16.0–19.5 5 × C min, 0.75 max
S40900 409 0.030 1.00 0.040 0.020 1.00 0.5 10.5–11.7 Ti 6X (C+N) min, 0.050 max 0.17 0.030
S43400 434 0.120 1.00 0.040 0.030 1.00 16.0–18.0 0.75–1.25
S43600 436 0.120 1.00 0.040 0.030 1.00 16.0–18.0 0.75–1.25 Cb 5 × C min
S43035 439 0.030 1.00 0.040 0.030 1.00 0.5 17.0–19.0 Ti [0.20+4(C+N)] min, 1.10 max Al 0.015 0.030
S44400 444 0.025 1.00 0.040 0.030 1.00 1.00 17.5–19.5 1.75-2.50 (Ti+Nb)[0.20+4(C+N)] min, 0.80 max 0.035
S41008 410S 0.080 1.00 0.040 0.030 1.00 11.5–13.5
Chemical Requirements of Ferritic-Austenitic Stainless Steels
UNS No. Grade C Mn P S Si Ni Cr Mo Ti Nb N Cu Other
S31803 0.03 2.0 0.030 0.020 1.00 4.5–6.5 21.0–23.0 2.5–3.5 0.08–0.20
S32101 0.04 4.0–6.0 0.040 0.030 1.00 1.35–1.70 21.0–22.0 0.10–0.80 0.20–0.25 0.10–0.80
S32205 2205 0.03 2.0 0.030 0.020 1.00 4.5–6.5 22.0–23.0 3.0–3.5 0.14–0.20
S32304 2304 0.03 2.5 0.040 0.040 1.00 3.0–5.5 21.5–24.5 0.05–0.60 0.05–0.20 0.05–0.20
S32550 255 0.04 1.5 0.040 0.030 1.00 4.5–6.5 24.0–27.0 2.9–3.9 0.10–0.25 1.50–2.50
S32750 2507 0.03 1.2 0.035 0.020 0.80 6.0–8.0 24.0–26.0 3.0–5.0 0.24–0.32 0.50
S32760 0.03 1.0 0.030 0.010 1.00 6.0–8.0 24.0–26.0 3.0–4.0 0.20–0.30 W 0.50–1.00

Technical Specifications

Specification Value
Standard ASTM A554/A554M Welded Stainless Steel Mechanical Tubing
Grade MT-429, MT-430, MT-430-Ti, 409, 434, 436, 439, 444, 410S, S31803, S32101, S32205, S32304, S32550, S32750, S32760, MT-301, MT-302, MT-304, MT-304L, MT-305, MT-309S, MT-309S-Cb, MT-310S, MT-316, MT-316L, S31655, MT-317, MT-321, MT-330, and MT-347.
Manufacturing Process As-welded or Cold-reduced
Shape Round, Square, Rectangular, or Special
Dimension Round: OD 1/2″ – 12 3/4″ (12.7 – 406.4mm) WT: 0.5 – 15mm
Square: 25 x 25  – 350 x 350mm  x 2 – 20mm
Rectangular: 25 x 38 – 250 x 300mm x 2 – 20mm
Length 3000-12000mm
Delivery Condition Annealed
Inspection Certificate EN 10204 Type 3.1 (Mill Test Certificate), EN 10204 Type 3.2 (Witness Testing or 3rd Party Inspection)
Tests Chemical analysis, Tensile test, Intergranular corrosion test, Metallographic examination
Packing

Plain ends. Small-diameter pipes are packaged in wooden crates, and large-diameter pipes are wrapped in woven bags.

Application

Architectural Components: Used in the construction of handrails, guardrails, and ornamental tubing for both interior and exterior designs.
Automotive Industry: Applied in the manufacturing of exhaust systems, structural components, and decorative trim.
Furniture Manufacturing: Utilized for making frames, legs, and other structural parts of furniture.
Food and Beverage Industry: Employed in equipment and machinery where hygiene and corrosion resistance are critical, such as in dairy, brewing, and food processing plants.
Medical and Pharmaceutical Equipment: Used in the construction of medical devices, hospital equipment, and pharmaceutical machinery due to its cleanability and resistance to corrosion.
Sports and Recreational Equipment: Applied in the manufacturing of bicycle frames, gym equipment, and other sports-related items.
Industrial Applications: Used in various industrial machinery and equipment where durability and corrosion resistance are important.
Transportation: Utilized in the construction of bus frames, truck bodies, and other transportation-related structures.

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