Super Duplex Steel UNS S32750 Tubes Manufacturer

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Silver Tube is one of the leading manufacturing houses & dealers of Super Duplex Stainless Steel UNS S32750 Tubes, a super duplex stainless steel with higher alloy content, thus making it superior to 2205 in corrosion resistance and strength. The processing with Stainless Steel UNS S32750 Seamless Tubes is a mechanical processing of the material, which results in a significantly lower unintended deformation and increased hardness for the existing structure, such as the thermal cutting. Applications of Stainless Steel UNS S32750 Welded Tubes are Oil and gas industry equipment, offshore platforms, heat exchangers, process and service water systems, fire-fighting systems, injection, and ballast water systems. In addition, stainless steel UNS S32750 EFW Tubes have excellent resistance to uniform pitting, crevice corrosion, and chloride stress corrosion cracking. Meanwhile, in dilute sulphuric acid contaminated with chloride ions, 2507 Stainless Steel UNS S32750 ERW Tubes has better corrosion resistance than SS 904L, which is specially designed to resist pure sulphuric acid.

The machined work piece has a homogeneous structure even at the edge, which does not change in the continuation of UNS S32750 Stainless Steel Tubes. The high molybdenum and chromium content of Super Duplex UNS S32750 Tubes makes it very resistant to unchanging corrosion by organic acids such as acetic and formic acid. In addition, because the low carbon content greatly lowers the risk of carbide precipitation at the grain boundaries during heat treatment, these Stainless Steel 2507 Tubes are highly resistant to carbide-related intergranular corrosion.

Stainless Steel UNS S32750 Tubes

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Super Duplex Stainless Steel UNS S32750 Tube Specification
Specifications ASTM A789 / ASME SA789
Dimensions ASTM, ASME and API.
Schedule SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
Type Seamless / ERW / Welded / Fabricated / CDW
Seamless Tubes Sizes 1/2" NB - 8" NB
Welded Tubes Sizes 6" NB - 24" NB
Length Single Random, Double Random & Required Length
End Plain End, Beveled End, Treaded
Outer Diameter 6.0-630mm
Thickness 0.3mm – 50 mm

ASTM A789 Super Duplex Steel S32750 Tubes Equivalent Grades

STANDARD UNS WERKSTOFF NR.
Super Duplex 2507 S32750 1.4410

ASME SA789 Super Duplex Steel S32750 Tubing Chemical Composition

Grade C Mn Si P S Cr Mo Ni N Fe
S32750 0.030 max 1.20 max 0.80 max 0.035 max 0.020 max 24.00 – 26.00 3.00 – 5.00 6.00 – 8.00 0.24 – 0.32 58.095 min

UNS S32750 Super Duplex Stainless Steel Seamless and Welded Tubing Mechanical Properties

Grade Tensile Strength (MPa) min Yield Strength 0.2% Proof (MPa) min Elongation (% in 50mm) min Hardness Max
HB HRB
S32750 795 550 15 310 32

Physical Properties of UNS S32750 Super Duplex Tubes

Density Modulus of Elasticity Coefficient of Thermal Expansion
68-212°F/°F
Thermal Conductivity Heat Capacity Electrical Resistivity
lb/in3 psi x 106 x10-6/°F Btu/h ft °F Btu/lb/°F W-in x 10-6
0.28 29 7.2 8.7 0.12 31.5

UNS S32750 Tube size and weight

Dimensions Wall Weight per Dimensions Wall Weight per
(mm) (mm) metre (kg) (mm) (mm) metre (kg)
12.7 x 12.7 1.20 0.44 40 x40 1.20 1.49
12.7 x 12.7 1.50 0.55 40 x40 1.50 1.85
15 x 15 1.20 0.53 40 x40 2.00 2.45
15 x 15 1.50 0.65 40 x40 3.00 3.75
20 x 20 1.20 0.71 50 x50 1.50 2.32
20 x 20 1.50 0.88 50 x50 2.00 3.08
20 x 20 2.00 1.19 50 x50 3.00 4.65
25 x 25 1.20 0.92 60 x60 2.00 3.71
25 x 25 1.50 1.14 60 x60 3.00 5.49
25 x 25 2.00 1.49 70 x70 3.00 6.53
25 x 25 3.00 2.20 80 x80 2.00 4.98
30 x 30 1.20 1.10 80 x80 3.00 7.53
30 x 30 1.50 1.37 100 x 100 2.00 6.40
30 x 30 2.00 1.84 100 x 100 3.00 9.53
30 x 30 3.00 2.72

2507 Super Duplex Stainless Steel Welded Tube Tolerances

O.D. Inches Wall Thickness Inches O.D. +/- Inches
1/2" to 1" incl. .025 to .065 .005
Over .065 to .134 .010
1 to 1-1/2" incl. .025 to .065 .008
Over .065 to .134 .010
1-1/2" to 2" incl. .025 to .049 .010
Over .049 to .083 .011
Over .083 to .148 .012
2" to 2-1/2" incl. .032 to .065 .012
Over .065 to .109 .013
Over .109 to .165 .014
2-1/2" to 3-1/2" incl. .032 to .165 .014
Over .165 to .220 .020
3-1/2" to 5" incl. .083 to .165 .020
Over .165 to .220 .025

Super Duplex SS S32750 Tubing Gauge Thickness

GAUGE THICKNESS RANGE (INCH) TYPICAL VALUE (INCH)
22 0.025 - 0.029 0.028
20 0.031 - 0.035 0.035
19 0.038 - 0.042 0.042
18 0.044 - 0.049 0.049
17 0.053 - 0.058 0.058
16 0.060 - 0.065 0.065
15 0.066 - 0.074 0.072
14 0.075 - 0.085 0.083
13 0.087 - 0.097 0.095
12 0.101 - 0.111 0.109
11 0.112 - 0.122 0.12
10 0.126 - 0.136 0.134
9 0.140 - 0.150 0.148
8 0.157 - 0.167 0.165
7 0.175 - 0.185 0.18

SDS S32750 Tube Standard Tolerances

Size Range Standard Tolerances
Form OD Wall Lengths and/or coils Grades OD Wall Lengths
Pressure & Corrosion Tubing

Meets or exceeds requirements for welded

Specification: ASTM-A789

1/16" (1.59 mm) - 4" (101.6 mm)

Metric sizes also available

0.010" (0.25 mm) - 0.220" (5.59 mm) Random or cut lengths up - 40' (12.2 m)

Coils to 1-1/2" OD

Super Duplex 2507
<1-1/2" (38.1 mm) ±0.005" (0.13 mm)
1-1/2" (38.1 mm) to 3" (76.2 mm) ±0.010" (0.25 mm)
3-1/2" (88.9 mm) to 4" (101.6 mm) ±0.015" (0.38 mm)
±10% Randoms up to +2" (50.8 mm)

Cuts +1/8" (3 mm) -0"

Coils to 80,000' (24,384 m)

Subsea Umbilical Tubing

Specifications: ASTM-A789 and ASTM-A790

3/8" (9.53 mm) to 1-1/2" (38.1 mm) 0.039" (0.99 mm) to 0.125" (3.18 mm) Cut lengths to 60' (18.3 m)

Coils to 1-1/2" OD*

Super Duplex 2507 ±0.005" (0.127 mm) ±10% Coils to 80,000' (24,384 m)
Super Duplex Steel 2507 Tubes
Other types of Super Duplex Stainless Steel UNS S32750 Tubes

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