ASTM A194 Grade 8m Nuts Properties

ASTM A194 Grade 8m Nuts Chemical Requirements

Grade Description
and
UNS Designation
C Mn P SE Si Cr Ni Mo Ti CbH N Cu Se V Al
ASTM A194/A194M Grade 8M (316) S31600 0.08 2.00 0.045 0.030 1.00 16.0-18.0 10.0-14.0 2.00-3.00 . . . . . . . . . . . . . . . . . . . . .

ASTM A194 Grade 8m Nuts Mechanical Requirements

ASTM A194/A194M Hardness RequirementsA

Grade and Type Completed Nuts Sample Nut after Treatment
Brinell Hardness Rockwell Hardness Brinell Hardness, min Rockwell Hardness B Scale, min
C Scale B Scale
ASTM A194/A194M Grade 8M 126 to 300 32 max 60 min ... ...

ASTM A194 Grade 8 Nuts Proof Load Using Threaded Mandrel (Inch Series)

Nominal Size, in. Threads per Inch Stress Area in. 2 Proof Load, lbf A
All Types of Grade 8
Heavy HexH HexI
1/4 20 0.0316 2 540 2 380
5/16 18 0.0524 4 190 3 930
3/8 16 0.0774 6 200 5 810
7/16 14 0.1063 8 500 7 970
1/2 13 0.1419 11 350 10 640
9/16 12 0.182 14 560 13 650
5/8 11 0.226 18 080 16 950
3/4 10 0.334 26 720 25 050
7/8 9 0.462 36 960 34 650
1 8 0.606 48 480 45 450
11/8 8 0.790 63 200 59 250
11/4 8 1.000 80 000 75 000
13/8 8 1.233 98 640 92 450
11/2 8 1.492 119 360 111 900

ASTM A194 Grade 8 Nuts Proof Load Using Threaded Mandrel (Metric)

Nominal Size, mm Threads Pitch Stress Area mm 2 Proof Load, kNA
All Types of Grade 8
Heavy HexH HexI
M6 1.0 20.1 11.1 10.4
M8 1.25 36.6 20.1 18.8
M10 1.50 58.0 31.9 29.9
M12 1.75 84.3 46.4 43.4
M14 2.0 115.0 63.3 59.2
M16 2.0 157.0 86.4 80.9
M20 2.5 245.0 134.8 126.2
M22 2.5 303.0 166.7 156.0
M24 3.0 353.0 194.2 181.8
M27 3.0 459.0 252.5 236.4
M30 3.5 561.0 308.6 288.9
M36 4.0 817.0 449.4 420.8

ASTM A194 Grade 8 Nuts Proof Load Testing of Strain Hardened Nuts Using Threaded Mandrel -(Inch)

Proof Load, kNA
NominalSize, mm ThreadPitch Stress Area,mm2 All Types of Grade 8(strain hardened) All Types of Grade 8(strain hardened)
Heavy HexC HexB
1/4 20 0.0316 3 950 3 480
5/16 18 0.0523 6 550 5 760
3/8 16 0.0774 9 675 8 510
7/16 14 0.1063 13 290 11 690
1/2 13 0.1419 17 740 15 610
9/16 12 0.182 22 750 20 020
5/8 11 0.226 28 250 24 860
3/4 10 0.334 41 750 36 740
7/8 9 0.462 53 130 46 200
1 8 0.606 69 690 60 600
11/8 8 0.790 82 950 75 050
11/4 8 1.000 105 000 95 000
13/8 8 1.233 123 300 110 970
11/2 8 1.492 149 200 134 280

ASTM A194 Grade 8 Nuts Proof Load Testing of Strain Hardened Nuts Using Threaded Mandrel (Metric)

Proof Load, kNA
Nominal Size, mm Thread Pitch Stress Area,mm2 All Types of Grade 8(strain hardened) All Types of Grade 8(strain hardened)
Heavy HexC HexB
M6 1.0 20.1 17.3 15.3
M8 1.25 36.6 31.3 27.8
M10 1.50 58.0 49.9 44.1
M12 1.75 84.3 72.5 64.1
M14 2.0 115.0 98.9 87.4
M16 2.0 157.0 135.0 119.3
M20 2.5 245.0 210.9 186.2
M22 2.5 303.0 240.9 209.0
M24 3.0 353.0 280.6 243.5
M27 3.0 459.0 332.7 300.6
M30 3.5 561.0 406.7 367.5
M36 4.0 817.0 563.7 506.5

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