Hot Rolled Angles
Conforms to:
ASTM A36.
Related Specifications: ASTM A6
General requirements for Rolled Structural Steel Bars, Shapes, and Sheet
Piling.
Chemistry:
Carbon 0.26% max
Manganese N/A
Phosphorous 0.04% max
Sulfur 0.05% max
Mechanical Properties:
Tensile
Strength (ksi) 58-80
Yield Point
(ksi) 36 min.
Elongation
in 8 in. 20% min.
Elongation in 2 in. 21% min.
Dimensional Tolerances.(Per ASTM A6
table 17)
|
|
(L) Length of
Leg |
Squareness
per inch** |
Variations from Thickness for Thicknesses Given, Over and
Under (+/-) (T) |
|||
|
Nominal
Size * |
Over
Theo. |
Under
Theo. |
3/16 and under |
Over 3/16 to 3/8, incl. |
Over 3/8 |
|
|
1 and
under |
1/32 |
1/32 |
3/128 |
0.008 |
0.010 |
NA |
|
Over 1 to
2, incl. |
3/64 |
3/64 |
3/128 |
0.010 |
0.010 |
0.012 |
|
Over 2 to
3, excl. |
1/16 |
1/16 |
3/128 |
0.012 |
0.015 |
0.015 |
|
3 to
4,incl. |
1/8 |
3/32 |
3/128 |
NA |
NA |
NA |
|
Over 4 to
6, incl. |
1/8 |
1/8 |
3/128 |
NA |
NA |
NA |
|
Over 6 |
3/16 |
1/8 |
3/128 |
NA |
NA |
NA |
* For unequal
leg angles, longer leg determines classification.
** 3/128in./in=1-1/2 degree
Length Tolerances (Per ASTM
A6 Table 19)
|
Variations from Specified Length for Lengths Given,
in. |
||||||||||||
|
Nominal Size |
5 to 10’ |
10 to 20’ |
20 to 30’ |
30 to 40’ |
40 to 50’ |
50 to 65’ |
||||||
|
+ |
- |
+ |
- |
+ |
- |
+ |
- |
+ |
- |
+ |
- |
|
|
Under 3 |
5/8 |
0 |
1 |
0 |
1-1/2 |
0 |
2 |
0 |
2-1/2 |
0 |
2-1/2 |
0 |
|
3 and over |
1 |
0 |
1-1/2 |
0 |
1-3/4 |
0 |
2-1/4 |
0 |
2-3/4 |
0 |
2-3/4 |
0 |
Straightness Tolerances (Per ASTM A6 Table 21)
|
Variable |
Nominal Size |
Permissible Variation, in. |
|
Camber |
under 3 |
¼ in. in any 5 ft., or ¼ X (# of ft. of total length/5) |
|
3 and over |
1/8 X (# of ft. of total length/5) |
|
|
Sweep |
Straightness tolerances are not specified; sweep will vary
due to the extreme flexibility of these shapes. |
|
2