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You are here: Home » Products » F61 Uns S32550 Heavy Hex Nuts 1.4507 On Sale
F61 Uns S32550 Heavy Hex Nuts 1.4507 On Sale
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Product: Views:109F61 Uns S32550 Heavy Hex Nuts 1.4507 On Sale 
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Last updated: 2017-12-10 14:41
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F61(S32550) Nut
The nut is a fastener with internal threads and used in conjunction with a screw for mechanical parts for movement or power.

BDF can offer all kinds of hot forged and cold formed nuts such as hexagon nuts, heavy hex nuts, hexagon coupling nuts, hexagon thin nuts, hexagon castle nuts, self locking nuts, hexagon domed cap nuts and other non-standard nuts according to customer drawings. The size ranges from M6-M100 in METRIC and 3/8” to 3-1/2” in INCH.
The S32550 steel is austenitic-ferrite (biphase) stainless steel developed on the basis of the Ferralium alloy 255 in the UK. This has just evolved in the 1970s and is one of the second generation of duplex stainless steel The 255 / S32550 duplex stainless steel, with good mechanical properties, especially wear resistance is better than the general austenitic stainless steel, is the ideal material for seawater environment for the ship with a screw propeller, shaft, submarine seals Wait. The higher chrome, molybdenum and nitrogen contents have a high resistance to erosion, crevice corrosion and general corrosion, and it also has strong resistance to chloride corrosion, higher thermal conductivity and lower thermal expansion Coefficient, can be widely applied to petroleum, chemical, natural gas, pulp, paper and other fields.

F61(S32550) Chemical Composition:

%

Cr

Ni

Mo

C

Mn

Si

P

S

Cu

N

min

24.0

4.5

2.9






1.5

0.1

max

27.0

6.5

3.9

0.04

1.5

1.0

0.04

0.03

2.5

0.25

F61(S32550) Bolt Mechanical Properties:

Condition

Tensile Strength

Yield Strength σp0.2/MPa

Elongation
 
A5%

Brinell Hardness

Solution Treated

800

550

15

≤310

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