No, ASTM A 29 is a steel bar spec. Stahlschl&[ignore]uuml[/ignore];ssel lists ASTM A 572 grade 50 as the equivalent for structural applications. It also lists grades 1024 and 1524 as equivalents, but the carbon content is higher for these grades. 1518 is better, but this grade has not be used in plate standards.
There is quite a bit of information out there, it just takes a bit of tracking down. Try entering the Werkestoff Number and looking at the responses. It all depends on the product form.
Other useful sources are the producers from the country of the standard origin - they usually have product brochures that give comparisons.
Only thing that I would say is beware using comparators published on the web that are not published documents such as technical brochures in pdf format. Much better to go to a specification conversion book such as
Worldwide guide to equivalent irons and steels published by ASM. I have to hand to ASM they produce some fine reference books.
Seems to me there are a lot of enquiries about equivalent specifications. Could do with some FAQ?!