Plate Chemistry*

 Up thru 3/4"Over 3/4"
thru 1-1/2"
Over 1-1/2"
thru 2-1/2"
Over 2-1/2"
thru 4"
Over 4"
Carbon0.250.250.260.270.29
Manganese--.80/1.20.80/1.20.85/1.20.85/1.20
Phosphorus0.040.040.040.040.04
Sulphur0.050.050.050.050.05
Silicon.40 max.40 max.15/.40.15/.40.15/.40
Copper (min % when copper steel is specified)0.200.200.200.200.20

* Note: For each reduction of 0.01% below the specified carbon maximum, an increase of 0.06% manganese above the specified maximum will be permitted, up to the maximum of 1.35%.

Bar Chemistry

 Up thru 3/4"Over 3/4" thru 1-1/2"Over 1-1/2" thru 4"Over 4"
Carbon0.260.270.280.29
Manganese--0.60/0.900.60/0.900.60/0.90
Phosphorus0.040.040.040.04
Sulphur0.050.050.050.05
Silicon.40 max.40 max.40 max.40 max
Copper (min % when copper steel is specified)0.200.200.200.20

Shapes (Beam, Angle) Chemistry**

 All Sizes
Carbon0.26
Manganese--
Phosphorus0.04
Sulphur0.05
Silicon.40 max
Copper (min % when copper steel is specified)0.20

** Manganese content of 0.85/1.35% and silicon content of 0.15/0.40% is required for flange thickness > 3 in.

Typical A36 Mechanical Properties †

Tensile Strength:58,000 - 80,000 psi
Min. Yield Point:36,000 psi ††
Elongation in 2":23%

See ASTM Specification for specific adjustments.
†† Yield Point 32,000 psi for plates over 8 in.

Nonresulphurized Carbon Steels

Click here to view Resulphurized Carbon Steel Properties

Click here to view Rephosphorized-Resulphurized Carbon Steel Properties

AISI/SAE DesignationCarbonManganeseMax. PhosphorusMax. Sulfur
10050.06 max0.35 max0.040.05
10060.08 max0.25-0.400.040.05
10080.10 max0.30-0.500.040.05
10100.08-0.130.30-0.600.040.05
10120.10-0.150.30-0.600.040.05
10130.11-0.160.50-0.800.040.05
10150.13-0.180.30-0.600.040.05
10160.13-0.180.60-0.900.040.05
10170.15-0.200.30-0.600.040.05
10180.15-0.200.60-0.900.040.05
10190.15-0.200.70-1.000.040.05
10200.18-0.230.30-0.600.040.05
M10200.17-0.240.25-0.600.040.05
10210.18-0.230.60-0.900.040.05
10220.18-0.230.70-1.000.040.05
10230.20-0.250.30-0.600.040.05
10250.22-0.280.30-0.600.040.05
10260.22-0.280.60-0.900.040.05
10290.25-0.310.60-0.900.040.05
10300.28-0.340.60-0.900.040.05
10350.32-0.380.60-0.900.040.05
10370.32-0.380.70-1.000.040.05
10380.35-0.420.60-0.900.040.05
10390.37-0.440.70-1.000.040.05
10400.37-0.440.60-0.900.040.05
10420.40-0.470.60-0.900.040.05
10430.40-0.470.70-1.000.040.05
10440.43-0.500.30-0.600.040.05
M10440.40-0.500.25-0.600.040.05
10450.43-0.500.60-0.900.040.05
10460.43-0.500.70-1.000.040.05
10490.46-0.530.60-0.900.040.05
10500.48-0.550.60-0.900.040.05
10530.48-0.550.70-1.000.040.05
10550.50-0.600.60-0.900.040.05
10590.55-0.650.50-0.800.040.05
10600.55-0.650.60-0.900.040.05
10640.60-0.700.50-0.800.040.05
10650.60-0.700.60-0.900.040.05
10690.65-0.750.40-0.700.040.05
10700.65-0.750.60-0.900.040.05
10740.70-0.800.50-0.800.040.05
10750.70-0.800.40-0.700.040.05
10780.72-0.850.30-0.600.040.05
10800.75-0.880.60-0.900.040.05
10840.80-0.930.60-0.900.040.05
10850.80-0.930.70-1.000.040.05
10860.80-0.930.30-0.500.040.05
10900.85-0.980.60-0.900.040.05
10950.90-1.030.30-0.500.040.05

Resulphurized Carbon Steels

AISI/SAE DesignationCarbonManganeseMax. PhosphorusMax. Sulfur
11080.08-0.130.50-0.800.040 max0.08-0.13
11100.08-0.130.30-0.600.040 max0.08-0.13
11170.14-0.201.00-1.300.040 max0.08-0.13
11180.14-0.201.30-1.600.040 max0.08-0.13
11370.32-0.391.35-1.650.040 max0.08-0.13
11390.35-0.431.35-1.650.040 max0.13-0.20
11400.37-0.440.70-1.000.040 max0.08-0.13
11410.37-0.451.35-1.650.040 max0.08-0.13
11440.40-0.481.35-1.650.040 max0.24-0.33
11460.42-0.490.70-1.000.040 max0.08-0.13
11510.48-0.550.70-1.000.040 max0.08-0.13

Rephosphorized-Resulphurized Carbon Steels

AISI/SAE DesignationCarbonManganeseMax. PhosphorusMax. SulfurLead
12120.13 max0.70-1.000.07-0.120.16-0.23
12130.13 max0.70-1.000.07-0.120.24-0.33
12150.09 max0.75-1.050.04-0.090.26-0.35
12L140.15 max0.85-1.150.04-0.090.26-0.350.15-0.35

The formulas below are based on theoretical nominal weights and considered approximate; use for estimating only. Steel density assumed is 0.2904 lbs./in.3
ROUNDS
D2 x 2.67 = lbs./ft.

(D in inches)
SQUARES
D2 x 3.40 = lbs./ft.

(D in inches)
HEXAGONS
D2 x 2.9473 = lbs./ft.

(D in inches)
FLATST x W x 3.40 = lbs./ft.

(T and W in inches)
PLATEST x .2836 x 144 = lbs./sq.ft.

(T in inches)
SHEETST x .2904 x 144 = lbs./sq.ft.

(T in inches)