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ALLOY 2205 COMPOSITION

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Stainless Steel 2205(tm)

Related Metals:

Marinox 21(tm)
AF.F51
AL 2205(tm)
Alloy 2205
Cabvalloy alloy VS-22(tm)
F51
Cabvalloy VS-22(tm)
RA 2205(tm)                                    

Specifications:

ASTM A182 Grade F51
ASTM A240
ASTM A789
ASTM A790
DIN 1.4462
UNS S31803

Chemistry Data

Carbon

0.03 max

Chromium

21 - 23

Iron

Balance

Manganese

2 max

Molybdenum

2.5 - 3.5

Nickel

4.5 - 6.5

Nitrogen

0.08 - 0.2

Phosphorus

0.03 max

Silicon

1 max

Sulphur

0.02 max

General Information

Principal Design Features

2205 is a duplex stainless steel designed to combine improved resistance to stress corrosion cracking, pitting, crevice corrosion and high strength when compared with other stainless alloys. This alloy resists chloride environments and sulfide stress corr


Applications

Most often employed in welded pipe and tube in chemical tanks, flue gas filters, acetic acid distillation components and heat exchangers.


Machinability

Similar in nature to 316 stainless steel. Slow speeds, positive feeds, sharp tooling and rigid mounts are essential. Machinable with either high speed or carbide tooling, with speeds for carbide reduced by roughly 20 %.


Forming

Due to its inherently high strength and work hardening rate, 2205 is difficult to form. It will take a lower radius than 316 stainless and a higher allowance must be made for springback.


Corrosion Resistance

2205 surpasses 316 and 317 stainless in its resistance to environments containing chloride ions, and halogens. It is also superior in resistance to intergranular attack, due to its low carbon content and pitting and crevice corrosion as well as stress cor


Welding

TIG, MIG, SMAW and manual covered electrode methods have been successfully employed. Use caution in the following areas : 1.) Do not preheat the weld piece. 2.) use low heat inputs and 3.) Cool below 300 F between passes.


Hot Working

Hot work should be done in the range of 1750-2100 F, although room temperature forming is recommended whenever possible. When any hot forming is performed, a full anneal with rapid quench is required to reattain maximum stability and properties.


Annealing

Anneal at 1868-1958 F(1020-1070 C), water quench.


Physical Data

Density (lb / cu. in.)

0.285

Specific Gravity

7.88

Specific Heat (Btu/lb/Deg F - [32-212 Deg F])

0.1

Modulus of Elasticity Tension

27.5

Mechanical Data

Form

Plate

Condition

Test Specimen Annealed

Temper

70

Tensile Strength

105

Yield Strength

75

Elongation

35

Rockwell

C24

Brinnell

252


Form

Sheet

Condition

Test Specimen Annealed

Temper

200

Tensile Strength

90

Yield Strength

50


Form

Sheet

Condition

Test Specimen Annealed

Temper

400

Tensile Strength

80

Yield Strength

45


Form

Sheet

Condition

Test Specimen Annealed

Temper

600

Tensile Strength

79

Yield Strength

40

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