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                                                              ASTM B 473 ALLOY 20

                                                              UNS N08020 ALLOY 20 

                                                              Nuts & Bolts Specification

 

 

Chemical Composition, %

Ni

Fe

Cr

Cu

Mo

Nb

C

Mn

P

S

Si

32.00-38.00

Balance

19.0-21.0

3.0-4.0

2.0-3.0

8xC-1.0 max

.07max

2.0 max

.045 max

.035 max

1.0 max

 

Mechanical Properties

Materials

Condition

Size

Tensile Strength ksi[MPa]

Yield Strengh ksi[MPa]

Elongation %

Reduction Area %

UNS N08020

Annealed, Hot or Cold Finished

All Sizes

80 [551]

35 [241]

30

50

UNS N08020

Annealed, Strain Hardened

Upto 2″[50.2mm]

90 [620]

60 [415]

15

40

 

     A –  For wire only, tensile strength 90 to 120.0 ksi (620 to 830 MPa); no requirements on yield strength, elongation, and reduction of area.

     B –  Cold-finished shapes require only 15 %, minimum, elongation.