Any one got any large pieces of S3, S510 or S514 steel ?.

I need one or more large pieces of either S3, S510 or S514 steel sheet for my project (10g, 12g & 14g), they need to be at least 36″ x 36″, though the larger the better, I have so far only been able to obtain sheets that are 13″ wide by 72″ long, which is OK for most of the parts I am making, but I need wider pieces for some of the larger parts.
I don’t want to use 4130 for various reasons.

If any of you have any that is spare to your needs, or know where I might be able to obtain large pieces, I would be pleased to hear from you.:D

Cheer’s.

Bob. T