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Duplex 2205, ferritic-austenitic stainless steel

Duplex 2205 (F51, F60) Stainless Steel Coil and Sheet

The most widely used duplex grade: 22% chromium, 3% molybdenum and 5–6% nickel in a two-phase structure. About twice the yield strength of 316, with better pitting and crevice corrosion resistance than 316L or 317L in most media, and outstanding resistance to stress corrosion cracking.
Tell us about your projectSee sizes
Forms
Coil, sheet
Thickness
0.15–3.0 mm
Width
1000 / 1219 / 1240 / 1500 mm
Also known as
UNS S32205 / S31803, EN 1.4462

Is Sanmei Metal the right supplier for you?

We supply stainless steel together with the processing and technical support that projects and products need.

A good fit if you

Need a specific grade, finish or size for a project, from samples or one coil to a few containers
Want it slit, cut to size or fabricated to your drawing
Need documents: a Mill Test Report with every order, SGS testing on request
Want help choosing the right grade and finish for your application
Build products or projects: equipment housings, architectural interiors, elevator and kitchen work

When buying direct from a mill may suit you better

You need standard grades in full-mill quantities and compare on price per tonne
Not sure which applies to you? Tell us about your order and we will give you our professional advice.
Tell us about your projectSee what we fabricate

Sizes we supply in 2205.

Standard widths from stock, cut-to-length sheet, and custom slitting for strip-fed production lines.

2205 coil

Width
1000, 1219, 1240, 1500 mm, or slit to your width
Thickness
0.15–3.0 mm
Coil weight
3–10 t

2205 sheet

Width
1000, 1219, 1240, 1500 mm, or cut to size
Length
2000, 2438, 2500, 3000, 3048 mm
Thickness
0.3–3.0 mm
Every order ships with a Mill Test Report. Sample sheets and small batches are welcome. Standard mill finish: 2B finish.
Get a quote for 2205Send a cut list or drawing

Why choose duplex 2205?

For high-pressure and highly corrosive service, 2205 is the cost-effective choice.

Strength with corrosion resistance

The duplex structure gives high strength, toughness and corrosion resistance for high-pressure, corrosive service.

Cost-effective

High yield strength lets engineers use thinner sections and less material.

Lower thermal expansion

Less thermal expansion and higher thermal conductivity than austenitic grades.

S32205 and S31803

S32205 (F60) is made at the upper end of the composition range and fully meets S31803 (F51), so it can be dual-certified. Not the other way round.

Equivalents

UNS

S32205 (F60), S31803 (F51)

EN / DIN

1.4462, X2CrNiMoN22-5-3

JIS

SUS329J3L

Common name

2205
Tell us what the part is, where it will be used and roughly how many. We confirm the grade and finish before you order.
Tell us your application

2205 mechanical and physical properties.

Minimum mechanical values (ASTM A240, S32205) and typical physical values, in US and metric units.

Mechanical properties

Property
US
Metric
Yield strength, min.
65 ksi
450 MPa
Tensile strength, min.
95 ksi
655 MPa
Elongation, min.
25%
25%
Hardness, max.
31 HRC
293 HBW

Physical properties

Property
US
Metric
Density
0.278 lb/in³
7.80 g/cm³
Modulus of elasticity
29.0 × 10⁶ psi
200 GPa
Thermal expansion, 68–212 °F
7.2 × 10⁻⁶ /°F
13.0 µm/m·°C
Thermal conductivity
8.7 Btu/ft·hr·°F
15 W/m·K
Specific heat
0.12 Btu/lb·°F
500 J/kg·K
Electrical resistivity
29.5 µΩ·in
75 µΩ·cm

Chemical composition, % by weight, max. unless a range (ASTM A240)

Grade
C
Mn
Si
P
S
Cr
Ni
Mo
N
S31803
0.030
2.00
1.00
0.030
0.020
21.0–23.0
4.5–6.5
2.5–3.5
0.08–0.20
S32205
0.030
2.00
1.00
0.030
0.020
22.0–23.0
4.5–6.5
3.0–3.5
0.14–0.20
Tell us what the part is, where it will be used and roughly how many. We confirm the grade and finish before you order.
Tell us your application

Corrosion, heat and the shop floor.

How 2205 behaves in service and in fabrication.

Corrosion resistance

Excellent, better than 316, particularly in chloride environments, with outstanding resistance to stress corrosion cracking.

Heat resistance

Not a high-temperature grade: like all duplex steels, use is normally limited to about 300 °C (570 °F), above which it can become brittle.

Machining

More demanding than 316 because of its strength. Carbide tooling is recommended.

Welding

Standard methods with duplex practice: controlled heat input and a matching filler such as 2209. Preheating and post-weld heat treatment are normally not required.

Hot working

1024–1177 °C (1875–2150 °F), then rapid cooling.

Annealing

1038–1149 °C (1900–2100 °F), then rapid cooling.

Cold working

Possible, with more force than austenitic grades.

Hardening

Cannot be hardened by heat treatment, only by cold working.
Have a drawing, cut list or sample photo? Upload it and we review it and send you a quote.
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Finishes and processing from Sanmei Metal.

Mill finishes, decorative finishes made in our own facility, and coil and sheet cut to your size.

Decorative finishes

Nickel Silver Hairline Stainless Steel Sheet S26HL-01 (3)
Hairline
Nickel Silver Satin Stianless Steel Sheet S26ST-01 (3)
Satin
black mirror polised stainless steel
Mirror
Nickel Silver Vibration Stainless Steel Sheet S26VB-01 (2)
Vibration
See all decorative finishes →

Mill finishes

Processing

Precision slitting
Cut to length
Shearing
Edge trimming
Blanking
Surface polishing
Tell us about your projectSend a sample photo or drawing

304, 316 or 2205?

Pick by what matters most.

304: cost

The most common, lowest-cost stainless, for general use where high corrosion resistance is not needed.
Explore
304

316: corrosion resistance

Adds molybdenum and more nickel than 304, for chlorides, acids and alkalis: marine, chemical processing and high sanitary standards.
Explore
316

2205: all-round performance

High strength, good corrosion resistance and resistance to stress corrosion cracking, for marine, chemical and industrial service. It costs more than 304 and 316, and its performance justifies it.
Not sure which grade fits?
Tell us about your application

The supplier you can trust.

Every order ships with a Mill Test Report.
Click a document to see it full size.
Get a quote with Mill Test Report

2205 stainless steel FAQ.

Questions buyers ask before ordering 2205.

What do F51 and F60 mean?

They are the ASTM A182 designations for 2205 forgings: F51 is UNS S31803 and F60 is UNS S32205. S32205 meets S31803, so material can be dual-certified.

Is 2205 magnetic?

Yes. Its duplex structure is about half ferrite, so it is magnetic.

How strong is 2205?

Minimum yield strength is 65 ksi (450 MPa), about twice that of 316.

Can 2205 be used at high temperature?

Not a high-temperature grade: like all duplex steels, use is normally limited to about 300 °C (570 °F), above which it can become brittle.

What sizes do you supply?

Coil in 1000, 1219, 1240 and 1500 mm widths or slit to size, 0.15–3.0 mm thick. Sheet in the same widths, 2000 to 3048 mm long, 0.3–3.0 mm thick.
Question not answered here? Ask us directly and our team will reply in person.
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Contact us

Creating Center, Shunde District, Foshan City, Guangdong Province, 528315, China
+8615015653566 / 0757-87668353
Paige Deng
marketing@sanmeimetal.com

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    Email: marketing@sanmeimetal.com

    Headquarters:
    Creating Center, No.142, Yuhe Road, Lecong Town, Shunde District, Foshan City, Guangdong Province, China. 528315

    Factory: Liyuan Logistics City, Chencun Town, Shunde District, Foshan City, Guangdong Province, China. 528313

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