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Welded hollow section for support platforms

Stainless Steel Rectangular Tube

Welded rectangular hollow sections are commonly considered for load-bearing frames and platforms where a wider profile is needed than square tube. Review section dimensions, wall thickness, finish and structural requirements against the project use.

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Rectangular stainless steel hollow sections for structural equipment frames
Tube
Cargo group
201 / 304 / 304L
Reference grades
ASTM
Primary standard

Standards

  • ASTMA554
  • JISG3446
  • EN10296-2 (on request)

Dimensions

Section
10×20 - 50×100 mm
Wall thickness
0.5 - 3.0 mm
Length
up to 6 m, cut to size

Finishes and applications

Mill2BSatin (HL)Mirror (No.8)
  • Structural frames & platforms
  • Support beams for tanks and vessels
  • Machine bases

Grades and properties

These values are references for quotation review. Actual heat values should be checked against the applicable mill test certificate.

201 / SUS201

ASTM 201 (S20100) / JIS SUS201 / EN 1.4372

Austenitic

Composition, wt %

C≤ 0.15
Cr16.0-18.0
Ni3.5-5.5
Mn5.5-7.5
Si≤ 1.00
P≤ 0.060
S≤ 0.030
N≤ 0.25

Minimum mechanical properties

Tensile strength
≥ 515 MPa (75 ksi)
Yield strength (0.2%)
≥ 260 MPa (38 ksi)
Elongation
≥ 40%
Hardness
≤ 217 HB / 95 HRB

Annealed minimums based on ASTM A240 plate and sheet requirements. Tube standards such as A554 may differ; confirm the governing product standard and applicable mill test certificate.

304 / SUS304

ASTM 304 (S30400) / JIS SUS304 / EN 1.4301

Austenitic

Composition, wt %

C≤ 0.08
Cr18.0-20.0
Ni8.0-10.5
Mn≤ 2.0
Si≤ 0.75
P≤ 0.045
S≤ 0.030
N≤ 0.10

Minimum mechanical properties

Tensile strength
≥ 515 MPa (75 ksi)
Yield strength (0.2%)
≥ 205 MPa (30 ksi)
Elongation
≥ 40%
Hardness
≤ 201 HB / 92 HRB

Annealed minimums based on ASTM A240 plate and sheet requirements. Tube standards such as A554 may differ; confirm the governing product standard and applicable mill test certificate.

304L / SUS304L

ASTM 304L (S30403) / JIS SUS304L / EN 1.4307

Austenitic

Composition, wt %

C≤ 0.030
Cr18.0-20.0
Ni8.0-12.0
Mn≤ 2.0
Si≤ 0.75
P≤ 0.045
S≤ 0.030
N≤ 0.10

Minimum mechanical properties

Tensile strength
≥ 485 MPa (70 ksi)
Yield strength (0.2%)
≥ 170 MPa (25 ksi)
Elongation
≥ 40%
Hardness
≤ 201 HB / 92 HRB

Annealed minimums based on ASTM A240 plate and sheet requirements. Tube standards such as A554 may differ; confirm the governing product standard and applicable mill test certificate.

316L / SUS316L

ASTM 316L (S31603) / JIS SUS316L / EN 1.4404

Austenitic

Composition, wt %

C≤ 0.030
Cr16.0-18.0
Ni10.0-14.0
Mo2.0-3.0
Mn≤ 2.0
Si≤ 0.75
P≤ 0.045
S≤ 0.030

Minimum mechanical properties

Tensile strength
≥ 485 MPa (70 ksi)
Yield strength (0.2%)
≥ 170 MPa (25 ksi)
Elongation
≥ 40%
Hardness
≤ 217 HB / 95 HRB

Annealed minimums based on ASTM A240 plate and sheet requirements. Tube standards such as A554 may differ; confirm the governing product standard and applicable mill test certificate.

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