ASTM 1011 comes in many grades which determine the yield strength ie:1011 gr 42 would have a min yield of 42,000 psi
450 MPa
1018 Mild (low-carbon) steel Yield Strength, psi 53,700 =370Mpa = 3775 kg/cm2 ASTM A36 Mild (low-carbon) steel Yield Strength, psi 36,300 = 12000psi at allowable safety factor of 4x = 82 Mpa = 843kg/cm2
1018 is the number "one thousand and eighteen."It is also the name for 1018 steel which is the most common low-carbon mild steel alloy in many uses, including structural steel.
Its IS226 for structural steel & IS2062 for fusion weldable structural steel.
There may be no difference at all. In structural steel, 44W is a perfornamce rating (minimum yield strength 44,000psi). 1020 is steel chemistry (non-alloyed steel with 2.0% carbon). Quite often 44W is 1018 (1.8% carbon) or 1020 in composition. If your steel dealer is selling you 44W, ask about the composition.
30,000,000 psi
The velocity of sound in 1018 steel is approximately 5950 meters per second. This value can vary slightly depending on factors such as temperature and other properties of the steel.
5890 m/sec
In a lab experiment, I found the hardness of a sample of C-1018 Annealed carbon steel to be 73.58 (averaged over 6 runs) on the HRB scale.
AISI 1018 is usual quality structural grade A216 Gr WCB is Steel Castings, Carbon, Suitable for Fusion Welding, for High- Temperature Service
Rockwell Hardness of steel 1018 ranges from 71 to 78 converted from Brinell hardness. The difference from 71 to 78 is caused by manufacturing metods and/or purity of the alloy. The corresponding test for 1018 is RHB wich must be done using 1/16 a ball penetrator.
in JIS (Japanese) "SS" stands for structural steel, and 400 grade which is similar to AISI 1018.