ASTM B473 UNS N08020 ALLOY 20 Grade Specification | Aanuraj Fasteners Pvt Ltd- Nuts And Bolts

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.

ALLOY 20 UNS N08020 Nuts & Bolts

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.