Stainless Steel Bar for Oil Industry

The following specifications are applicable:
Type 440A
Type 440B
Type 440C
ASTM A276-67
ASTM A314-63
ASTM A-580-67
QQ-2-763D
MIL-S-862B

In addition, Type 440 A is covered by spec AMS 5631 and Type 440C is covered by spec AMS 5630C.

440B is a high carbon chromium stainless steel combining stainless steel properties with excellent hardness after heat treatment. 440B can achieve a hardness of up to 58 Rockwell HRc. ASTM 440B stainless steel has similar corrosion resistance properties to type 410 stainless, with optimum cossision resistance of 440B achieved with a temper below about 400°C. For ASTM 440B steel to achieve best corrosion resistance, surfaces must be free of scale, lubricants, foreign particles, and coatings applied for drawing and heading. Due to its high carbon content 440B annealed stainless machines similar to a high speed steel annealed grade

Composition ranges for 440B grade stainless steels

UNS S66286 A286 660B 660D ASTM A453

ASTM A638 Grade 660 Alloy A286 stockholders and suppliers, delivering to the whole World. We are suppliers of grade A286 round bar, diameters. A precipitation hardening stainless type steel suitable for applications at high temperature. This grade is suitable for applications requiring good corrosion resistance and high strength in temperatures up to 700°C. It can be used at higher temperatures for lower stress applications.660B, alloy A286 is a popular specification in the oil & gas industry and is widely used in aircraft and industrial gas turbines. Typical applications include afterburner parts, fasteners, sockets, screws, jet engine blades, turbine wheels and exhaust parts.