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ASTM B865

Monel K500 Round Bars and Rods.

ASTM B865 Standards And Specifications

ASTM B865 specification is used for Precipitation Hardening Monel K500 (UNS N05500) Bar, Rod, Wire, Forgings and Forging Stock.

ASTM B865 Round Bar

Astm B865 Round Bar

ASTM B865 Round Bar is a precipitation-hardenable nickel-copper material that combines the excellent corrosion resistance characteristic of Monel 400 with the added advantage of greater strength and hardness. These amplified properties, strength and hardness, are obtained by adding aluminum and titanium to the nickel-copper base and by a thermal processing used to effect precipitation, typically called age hardening or aging. When in the age-hardened condition, Monel K-500 has a greater tendency toward stress-corrosion cracking in some environments than Monel 400. Alloy K-500 has approximately three times the yield strength and double the tensile strength when compared with alloy 400. Plus, it can be further strengthened by cold working prior to precipitation hardening. The strength of this nickel steel alloy is maintained to 1200° F but stays ductile and tough down to temperatures of 400° F. Its melting range is 2400-2460° F.

Scope And Manufacturing

ASTM B865 specification covers UNS N05500 nickel-copper-aluminum alloy rounds, squares, hexagons, rectangles, and forgings and forging stocks manufactured by either hot working or cold working, and cold-worked wire. The material should conform to the required mechanical properties in both aged and unaged conditions. Precipitation hardening is accomplished by holding the material at a high temperature, followed by furnace cooling and then air cooling. Monel K-500 is readily fabricated by standard commercial procedures. Welding alloy K-500 is best accomplished by the gas-tungsten-arc welding process. It is recommended that Monel K-500 be annealed when it is welded and that any weldments be stress relieved prior to aging. Heavy machining of this alloy is best accomplished when the material is in the annealed condition or hot-worked and quenched condition. Age-hardened material however can be finish-machined to close tolerances and fine finishes. Therefore, the recommended practice is to machine slightly oversize, age-harden, then finish to size. During aging, a slight permanent contraction takes place, but little warpage occurs because of the low temperatures and slow cooling rates involved.

Siddhagiri Metals and Tubes has been supplying Monel K500 Round Bars over the years. We also have a huge inventory of Monel 400 Round Bars. Our company has gained recognition globally for the excellence of our services and quality of the products we supply. The products supplied by us are highly corrosion resistant.


ASTM B865 specification is for Monel K500 Round Bars manufactured by either hot working or cold working and cold-worked wire.
Other Names : ASTM B865 UNS N05500, Monel K500 Round Bar, Alloy K500 Round Bar
Material : Monel K500
Brand : Siddhagiri Metals and Tubes
Manufacturer : Siddhagiri Metals and Tubes
Rating : 4.0/5 based on 60 customer reviews

Our Inventory of ASTM B865 Material

  • ASTM B865 UNS N05500
  • Monel K500 Round Bar