Chemical Composition Element Specified / Typical Range (wt. %) C ≤0.030 Mn ≤1.20 Si ≤0.80 P ≤0.035 S ≤0.020 Cr 24.0–26.0 Ni 6.0–8.0 Mo 3.0–5.0 N 0.24–0.32 Cu 0.50 max. Fe Balance Note: Values are presented as representative ASTM A182 grade requirements. The applicable standard edition and material certificate govern the final chemical limits.

Mechanical Properties Property Minimum / Requirement Tensile Strength, min. 795 MPa Yield Strength, 0.2%, min. 550 MPa Elongation, min. 15% Hardness As specified by applicable standard / product condition

Offshore platforms and subsea systems Seawater and desalination plants Oil and gas processing Chemical and petrochemical equipment High-chloride and highly corrosive piping systems

Chemical Composition Element Specified / Typical Range (wt. %) C ≤0.030 Mn ≤1.20 Si ≤0.80 P ≤0.035 S ≤0.020 Cr 24.0–26.0 Ni 6.0–8.0 Mo 3.0–5.0 N 0.24–0.32 Cu 0.50 max. Fe Balance Note: Values are presented as representative ASTM A182 grade requirements. The applicable standard edition and material certificate govern the final chemical limits.

Mechanical Properties Property Minimum / Requirement Tensile Strength, min. 795 MPa Yield Strength, 0.2%, min. 550 MPa Elongation, min. 15% Hardness As specified by applicable standard / product condition

Offshore platforms and subsea systems Seawater and desalination plants Oil and gas processing Chemical and petrochemical equipment High-chloride and highly corrosive piping systems

2507 Stainless Steel Flange

Grade: 2507/S32750 /S32760

Flange types：

Weld Neck (WN); Slip-On (SO); Blind (BL); Socket Weld (SW); Threaded (TH); Lap Joint (LJ); Orifice Flange where specified

Nominal size：

ASME: NPS 1/2–24 under B16.5; large diameter NPS 26–60 under B16.47; EN/JIS/GB/T sizes depend on applicable standard

Pressure rating：

ASME Class 150, 300, 400, 600, 900, 1500, 2500 (availability depends on size/type); EN/GB PN classes; JIS 5K–63K

2507 is a super duplex stainless steel with high chromium, molybdenum and nitrogen contents. Its duplex microstructure provides very high strength together with excellent resistance to pitting, crevice corrosion and chloride stress corrosion cracking. It is intended for demanding corrosive services such as seawater, offshore oil and gas, chemical processing and desalination where conventional austenitic grades may not provide sufficient resistance.

Chemical Composition

Element	Specified / Typical Range (wt. %)
C	≤0.030
Mn	≤1.20
Si	≤0.80
P	≤0.035
S	≤0.020
Cr	24.0–26.0
Ni	6.0–8.0
Mo	3.0–5.0
N	0.24–0.32
Cu	0.50 max.
Fe	Balance

Note: Values are presented as representative ASTM A182 grade requirements. The applicable standard edition and material certificate govern the final chemical limits.

Mechanical Properties

Property	Minimum / Requirement
Tensile Strength, min.	795 MPa
Yield Strength, 0.2%, min.	550 MPa
Elongation, min.	15%
Hardness	As specified by applicable standard / product condition

Offshore platforms and subsea systems
Seawater and desalination plants
Oil and gas processing
Chemical and petrochemical equipment
High-chloride and highly corrosive piping systems

Introduction

Specification

Chemical Composition

Element	Specified / Typical Range (wt. %)
C	≤0.030
Mn	≤1.20
Si	≤0.80
P	≤0.035
S	≤0.020
Cr	24.0–26.0
Ni	6.0–8.0
Mo	3.0–5.0
N	0.24–0.32
Cu	0.50 max.
Fe	Balance

Note: Values are presented as representative ASTM A182 grade requirements. The applicable standard edition and material certificate govern the final chemical limits.

Mechanical

Mechanical Properties

Property	Minimum / Requirement
Tensile Strength, min.	795 MPa
Yield Strength, 0.2%, min.	550 MPa
Elongation, min.	15%
Hardness	As specified by applicable standard / product condition