17-4PH Stainless Steel Sheet .063″ (+/-0.008″) x 12.0″ x 12.0″ Thickness Tolerance +/-0.008″ AMS 5604, ASTM A693 Cold Rolled Annealed Width and Length Tolerance: + 1/4″ / -1/16″ Rockwell Hardness of C36 Yield Strength 160K PSI Corrosion resistance up to 1100 F, slightly magnetic. Unpolished, Know as 630 Stainless Steel. Can be hardened by low temperature heat treating. RETURN’S Where we are at fault. Item not as described, damaged or an obvious error on our part is guaranteed a full refund, inclusive of any & all shippingper our stated directions. RETURN DIRECTION’s; All returns MUST be in the original condition received. All returns MUST be shipped in the same manner as we shipped originally. ANY ADDITIONAL COST UP & BEYOND THE ORIGINAL COST, INCURRED IN RETURNING YOUR ITEM IS NOT REFUNDABLE. (if you choose to return an item at a higher rate than we originally shipped to you? This portion is NOT refundable) Refunds due because of a no error on our part are completed asan item refund only. Shipping is excluded. PLEASE feel free to contact us with any questions or concerns, as we strive for 100% satisfaction & happy customers. Items with a free shipping 20% restocking fee will apply.