Toledo Steel Supply stocks thicknesses of A36 from 11 gauge (.125") through 10 inches! This includes all 1/8th inch increments from .125" through 3-1/8"kept in stock. Above 3-1/8", we stock A36 in most 14" increments through 10 inches. We also stock most 14" increments of 4140 12" through 5-1/2"! All of our 4140 burnouts will be annealed after burn to return the parts to a uniform hardness, but can also be heat-treated to a desired Rockwell Hardness specification. Another material that we stock is A572 Grade 50. We keep on hand all 14" increments from 14" through 3-1/2"! We keep a large plate inventory "on-hand" to serve our customer base more quickly and efficiently to get the results that you need in this fast-paced market. Just because the steel plate material that you are looking for is not listed above, do not hesitate to send us an email or give us a call!