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Stainless Steel · Tubes · ASTM A789 / ASME SA789 S32750

Super Duplex 2507 Stainless Steel Tubes

In short: Super duplex 2507 tube to ASTM A789 is used for seawater-cooled exchangers, umbilicals and hydraulic and instrument lines offshore.

S32750
UNS number
7.8
density, g/cm³
3.1 / 3.2
EN 10204 certificates
6
Super Duplex 2507 product forms
Quote Super Duplex 2507 tubes →Sizes and weights
Super Duplex 2507 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. Super Duplex 2507 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 Super Duplex 2507 in tubes

PREN ≥ 40: suitable for seawaterYield strength 550 MPaOutstanding resistance to chloride SCCTight fabrication control needed to avoid intermetallics

Umbilical and control-line tubing needs strength and seawater resistance in thin walls; 2507 provides both.

Exchanger tubes in seawater service use 2507 where titanium is not selected.

Specification

How to specify Super Duplex 2507 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

Super Duplex 2507 tubes ASTM A789 / ASME SA789 S32750
Super Duplex 2507 tubes: ASTM A789 / ASME SA789 S32750
Specification
ASTM A789 / ASME SA789 S32750
UNS
S32750
EN / W.Nr.
1.4410
Order by
OD × wall, coil or straight lengths

Sizes and weights

Super Duplex 2507 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.

Super Duplex 2507 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

Super Duplex 2507 composition

UNS
S32750
EN / W.Nr.
1.4410 · X2CrNiMoN25-7-4
Density
7.8 g/cm³
PREN
≥ 40 (typically 41 – 43)
Super Duplex 2507 Stainless Steel chemical composition, % (ASTM A240 (S32750))
ElementLimit, %Why it matters
C0.030 max
Mn1.20 max
P0.035 max
S0.020 max
Si0.80 max
Cr24.0 – 26.0
Ni6.0 – 8.0
Mo3.0 – 5.0
Cu0.50 max
N0.24 – 0.32

Limits per ASTM A240 (S32750); other product forms and specifications differ slightly. Your order's specification and edition govern.

0%5%10%15%20%25%30% Mn Cr Ni Mo
Main alloying elements of Super Duplex 2507 Stainless Steel: bars show the permitted range (ASTM A240 (S32750)).

Questions

About Super Duplex 2507 tubes

Is 2507 tube used in umbilicals?

Yes, for subsea hydraulic and chemical-injection lines.

Is 2507 tube NACE compliant?

It can be supplied to NACE MR0175 when specified.

From enquiry to dispatch

How a Super Duplex 2507 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 Super Duplex 2507 tubes?

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

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