Duplex Stainless Steel 2207 Coil and Sheet (UNS S32750 / EN 1.4410 / Super Duplex 2507 Equivalent)

At Sanmei Metal, we supply Duplex Stainless Steel 2207 (UNS S32750 / EN 1.4410), also known in the industry as Super Duplex 2507 equivalent.

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Duplex Stainless Steel 2207 Coil and Sheet Basic Information

Sanmei Metal’s stainless steel inventory includes grade 2207 coils and sheets, sourced from China’s top mills and verified suppliers.

2207ss features a dual-phase ferrite–austenite microstructure, providing both high tensile strength and exceptional resistance to chloride-induced corrosion.

It significantly outperforms conventional austenitic grades such as 316L or 317L in resisting pitting and crevice corrosion, while offering mechanical strength nearly twice as high.

Designed for severe service environments — from seawater desalination plants to offshore oil and gas platforms — Duplex 2207 is the preferred choice when both corrosion resistance and strength are critical.

Key Characteristics

Dual-phase (ferritic–austenitic) microstructure
Excellent pitting and crevice corrosion resistance
Superior mechanical strength and fatigue resistance
High resistance to chloride stress corrosion cracking
Twice the yield strength of 304L and 316L
Suitable for continuous service up to 600°C

Equivalent Designations

Standard	Grade
ASTM	UNS S32750
EN	1.4410
AISI	2207
JIS	SUS329J4L
DIN	X2CrNiMoN25-7-4
Trade Name	Super Duplex 2507 (SAF 2507 Equivalent)

Note: “SAF” is a registered trademark of Sandvik. The widely used term “2207 Duplex Stainless Steel” corresponds to the same chemistry and performance level as UNS S32750 / SAF 2507.

Duplex Stainless Steel 2207 Processing

Hot Working: 1875–2150°F (1024–1177°C), followed by rapid cooling
Cold Working: Requires higher forming force than austenitic grades
Welding: Suitable with standard methods; post-weld annealing recommended for stress relief
Heat Treatment: Annealing at 1900–2100°F (1038–1149°C)
Hardening: Not hardenable by heat treatment; only through cold working

Duplex Stainless Steel 2207 Mechanical Property and Physical Property

Mechanical Properties of Duplex Stainless Steel 2207
Property	Yield Strength, min. (ksi)	Tensile Strength, min. (ksi)	Elongation, min. (%)	Hardness, max. (HRB)
Value	70	100	15	95

Physical Properties for Duplex Stainless Steel 2207
Property	Value
Density	0.281 lb/in³
Modulus of Elasticity	29.0 × 10⁶ psi
Coefficient of Thermal Expansion (68–212°F)	7.2 × 10⁻⁶ / °F
Thermal Conductivity	8.7 Btu/ft·hr·°F
Specific Heat	0.12 Btu/lb·°F
Electrical Resistivity	29.5 μΩ·in

Duplex Stainless Steel 2207Chemical Composition

Grade	C (Max)	Mn (Max)	Si (Max)	P (Max)	S (Max)	Cr (Max)	Mo (Max)	Ni (Max)	N (Max)	Fe (Max)
2207	0.03	1.2	0.8	0.035	0.02	24-26	3-5	6-8	0.24-0.32	Balance

BUY YOUR 2207

2207 vs 2205 Duplex Stainless Steel

While both 2205 and 2207 belong to the duplex family, 2207 provides significantly higher strength and improved corrosion resistance, especially in seawater and acidic conditions.

Feature	2205	2207
Tensile Strength	620 MPa	690 MPa
Pitting Resistance	High	Very High
Chloride Resistance	Moderate	Excellent
Cost	Lower	Slightly higher
Typical Use	General chemical plant	Marine, desalination, oil & gas

Strength and hardness:

2207 has higher tensile strength and yield strength than 2205.

Corrosion resistance

207 has better pitting and crevice corrosion resistance in high-chloride environments compared to 2205.

Application areas:

2207 is more suitable for extremely corrosive environments and applications.

Sanmei's duplex 2207 Stainless Steel Coil and Sheet Specification

For Coil

Type	Width (mm)					Weight (MT)	Thickness (mm)
2207 Coil	1000, 1219, 1240, 1500 or Customized					3-10	0.15-3.0

For Sheets

Type

Width (mm)

Length (mm)

Thickness (mm)

2207 Sheets

1000, 1219, 1240, 1500 or Customized

2000, 2438, 2500, 3000, 3048

0.3-3.0

FAQs

Q1: Is Duplex 2207 the same as Super Duplex 2507?

Yes. Duplex 2207 is a trade reference commonly used for UNS S32750, which is technically equivalent to Super Duplex 2507.

Q2: Can Duplex 2207 be used in seawater?

Absolutely. It provides excellent resistance to chloride-induced corrosion, making it ideal for marine and desalination systems.

Q3: What is the main difference between 2205 and 2207?

2207 offers higher chromium and molybdenum content, giving it better strength and corrosion resistance for more aggressive environments.

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She is a Trustworthy Friend and Business Partner
"Mrs.Paige is a long time business partner, supplying me many diversified products, she has the capacity to supply any product namely finished product, raw materials, machinery, spare parts & also packing materials. She always maintains quality, price and punctuality in full filling orders. She is a good friend with whom you could confidently move forward for the betterment of any business. I wish her good luck"
Mr. Moeez
Director
Start Your Worry-Free Journey
I've found her to be one of the most open and passionate people.
I've worked with Mrs Paige on numerous deals for our respective companies. At the time, I found her to be one of the most open and passionate people. Her dealing is flawless, with great coordination and problem-solving skills. You can always rely on her to come through for you and give you the best support. I can confidently say I gained a good friend and look forward to continued cooperation in the future.
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Director
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