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By certification 
Ideal for tubular structures and poles, ASTM A871 is a structural steel with corrosion resistant properties.
ASTM A871/A871M is divided into four levels (I, II, III, IV) according to it's property of the weathering resistance.ASTM A871/A871M belongs to high tensile low alloy steel material, which usually used in the construction, building, bridge.
Overview
1. Ideal structural steel for tubular structures and poles.
2. Available in two grades: 60 and 65.
3. It can be made to three types of chemical requirements: Type I, Type II and Type IV.
4. May be provided as-rolled, normalized or quenched and tempered.
5. Has atmospheric corrosion resistance and can be used in bare or unpainted conditions.
6. Thicknesses greater than 1 1/4" may be special ordered, but are not regularly stocked in our distribution centers.
ASTM A871 chemical composition
ASTM A871 |
A871 TYPE I |
A871 TYPE II |
A871 TYPE III |
A871 TYPE IV |
C |
≤ 0.19 |
≤0.20 |
≤0.15 |
≤0.17 |
Mn |
0.80-1.35 |
0.75-1.35 |
0.80-1.35 |
0.50-1.20 |
P |
≤0.04 |
≤0.04 |
≤0.04 |
≤0.04 |
S |
≤0.05 |
≤0.05 |
≤0.05 |
≤0.05 |
Si |
0.30-0.65 |
0.15-0.50 |
0.15-0.40 |
0.25-0.50 |
Ni |
≤0.40 |
≤0.50 |
0.25-0.50 |
≤0.40 |
Cr |
0.40-0.70 |
0.40-0.70 |
0.40-0.70 |
0.40-0.70 |
Mo |
- |
- |
- |
≤0.10 |
Cu |
0.25-0.40 |
0.20-0.40 |
0.20-0.50 |
0.30-0.50 |
V |
0.02-0.10 |
0.01-0.10 |
0.01-0.10 |
- |
Nb |
- |
- |
- |
0.005-0.50 |
ASTM A871 tensile property request
Grade |
Yield strength Min MPa |
Tensile strength Min MPa |
Elongation min |
|
| - | - | - | 200 mm |
50 mm |
A871 grade 60 |
415 |
520 |
16 |
18 |
A871 grade 65 |
450 |
550 |
15 |
17 |
ASTM A871 V impact test and energy
ASTM A871 steel plate thickness |
Energy (J) |
Temperature (degree) |
≤12 |
20 |
-18 |
＞12 |
20 |
-29 |
Available Sizes
Gnee Steel stocks the following standard sizes, but other sizes may be available for special orders.
| - | THICKNESS |
WIDTH |
LENGTH |
GRADE 60 |
3/16" – 1 1/4" |
48" – 120" |
UP TO 650" |
GRADE 65 |
3/16" – 1 1/4" |
48" – 120" |
UP TO 650" |
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