Can ASTM A1018 be substituted for A529 or A572?
Can ASTM A1018 be substituted for A529 or A572?
(OP)
Hello,
Does anyone know if A1018 steel can be substituted for A529 or A527? I have a customer who has begun fabrication on a project using some A1018 steel and the specifications called for A529. The Army Corps of Engineers wrote the specification and my customer is worried about the fabricated columns being rejected. any help would be appreciated.
Does anyone know if A1018 steel can be substituted for A529 or A527? I have a customer who has begun fabrication on a project using some A1018 steel and the specifications called for A529. The Army Corps of Engineers wrote the specification and my customer is worried about the fabricated columns being rejected. any help would be appreciated.





RE: Can ASTM A1018 be substituted for A529 or A572?
ASTM A 527 was withdrawn in 1994 and replaced with A 653. ASTM A 529 is for High Strength, C-Mn steel of Structural Quality.
The answer to your post is this, I would not permit substitution of 1018 steel for either specification. Why?
The carbon content is too low in 1018 to meet the minimum tensile requirements for A 529. For steel used in A 653, the maximum carbon content permitted is only 0.15% by mass for certain types and for other types permitted you need micro-alloying elements added, which is not the case for 1018.
You would be wise to stick with what was specified!
RE: Can ASTM A1018 be substituted for A529 or A572?
I think you are mixing SAE/AISI designations with ASTM designations. Maybe you are not a resident of the USA and do no understand the difference.
In any event, your customer cannot make this substitution without prior approval from their customer and their customer is not going to allow this substition especially if it is the US Army.
ASTM A1018 is sheet material whereas the specified material of ASTM A529 is as follows (not sheet)
ASTM A529 / A529M - 05(2009) Standard Specification for High-Strength Carbon-Manganese Steel of Structural Quality
1.1 This specification covers carbon-manganese steel shapes, plates, and bars of structural quality for use in riveted, bolted, or welded construction of buildings and for general structural purposes.
1.2 Material under this specification is available in two grades:
Grade Yield Strength,
ksi [MPa] Thickness
50 [345] 50 [345] Plates to 1 in. [25 mm] thick
to 15 in. [380 mm] wide
Bars to 3½ in. [90 mm]
Shapes with flange or leg thickness to
1½ in. [40 mm] inclusive
55 [380] 55 [380] Plates to 1 in. [25 mm] thick
to 15 in. [380 mm] wide
Bars to 3 in. [75 mm]
Shapes with flange or leg thickness to
1½ in. [40 mm] inclusive
Your customer must have started using SAE/AISI C1018 which is not sheet and more comparable in geomnetry e.g. bar, plate, tubing, etc but the mechanical properties are much below that of A529 grade 55 or grade 50. C1018 has a YS of only 32ksi whereas A529 has YS of 50Ksi as noted above.
If you do not know the following abbreviations, post it here and we will spell it out for you: ASTM, SAE, AISI, YS.
RE: Can ASTM A1018 be substituted for A529 or A572?
RE: Can ASTM A1018 be substituted for A529 or A572?
I guess you are saying that if the customer requirement is tubing, it could be rolled from ASTM A1018?
RE: Can ASTM A1018 be substituted for A529 or A572?
http://www.astm.org/Standards/A1018.htm
To clarify further I am also referring to ASTM A572 and ASTM A529. From what I understand the mill certs specify that the yield of the 1018 ranges from 58 to 60 ksi which exceeds the required yield of 50 ksi specified. According to my customer the steel suppliers have assured him that it is an acceptable susbstitute but he still wanted to make very certain because he does not want to finish fabrication on the columns just to have it rejected.
Thank you all for the rapid response.
RE: Can ASTM A1018 be substituted for A529 or A572?
If for some reason a manufacturing process used the coil directly, in theory at least you wouldn't have to go through the testing and reclassification routine. Mechanical properties-wise there is minimal defined difference between A1018 grades and the equivalent A529 or A572 grades.
RE: Can ASTM A1018 be substituted for A529 or A572?