Metallurgically bonded stainless steel

A steel form having a stainless steel exterior, the steel form comprising:

• a core region, a bonding region and a stainless steel region;
• the core region metallurgically bonded to the stainless steel region by the bonding region;
• the core region comprising at least 55 wt. % iron;
• the stainless steel region having a thickness of about 5 μm to about 250 μm, having a stainless steel composition, and including the stainless steel exterior, the stainless steel composition comprising an admixture of iron and chromium, and the stainless steel composition comprising a chromium concentration of about 10 wt. % to about 30 wt. % that varies by less than 5 wt. %;
• and
• the bonding region positioned between the stainless steel region and the core region, the bonding region having a thickness that is greater than 5 μm and less than the thickness of the stainless steel region, and having a bonding composition, the bonding composition comprising an admixture of iron and chromium, and the bonding composition having a chromium concentration proximal to the stainless steel region that is approximately equal to the chromium concentration of the stainless steel region and having a chromium concentration proximal to the core region that has less than about 5 wt. % chromium.

A steel form comprising:

• a brushed stainless steel surface carried by a stainless steel region;
• the stainless steel region having a thickness of about 5 μm to about 200 μm, having stainless steel composition that includes an admixture of iron and chromium, and a chromium concentration of about 10 wt. % to about 30 wt. % that varies by less than 5 wt. %, the stainless steel region carried by a bonding region;
• the bonding region having a thickness of about 5 μm to about 200 μm but less than the thickness of the stainless steel region, the bonding region metallurgically bonding the stainless steel region to a core region;
• the core region having a core composition that includes at least 85 wt. % iron;
• the bonding region further comprising a bonding composition that includes an admixture of iron and chromium, and a bonding region concentration gradient that decreases from a chromium concentration proximal to the stainless steel region that is approximately equal to the chromium concentration of the stainless steel region to a chromium concentration proximal to the core region that is less than about 1 wt. %.