Grade Composition (% by weight) Applications
C Cr Ni Mo Mn B Other Fe
ARK 40 <1.0 <5.0 <10.0 <2.0     V: <1.0
Al: <5.0		 Balance High bonding strength. Can replace aluminum bronze and Ni-Al coatings to reduce costs
ARK 250 0.6–0.8 13.0–15.0 1.0–3.0       <1.0 Balance High carbon martensitic, stainless-steel wear and corrosion-resistant coating for boiler tubes of coal-­fired boilers, repairing drying cylinders for paper ­making, crankshafts, plunger pistons, and shafts
ARK 280   41.0–43.0 <1.0     <5.0   Balance Waste incinerators and coal burners
ARK 390 <1.0   <1.0     <5.0 Si: <1.0
Other: <2.0		 Balance Boiler tubes for pulverized coal-fired boilers and waste incinerators against high temperature oxidation, hot corrosion and erosion wear, steel converters, hoods, and flue ducts.
ARK 399 <2.0 <20.0 <1.0     <5.0 Si: <1.0
Other: <2.0		 Balance It is used for the spraying of CFBs and pulverized coal boilers, fan blades, steel converter hoods and flue ducts, oil drilling equipment, and replacement of hard chrome plating.
ARK 400   23.0–26.0   7.0–12.0 0.8–1.5 2.0–5.0   Balance Suitable for protection of severely worn parts, waste incineration, biomass power generation, coal-fired power station boiler tubs. Can replace hard chrome plating and other products.
ARK 420   15.0–18.0       2.0–5.0 Nb: 7.0–12.0
Si: 2.0–5.0		 Balance Suitable for protection of severely worn parts, waste incineration, biomass power generation, coal-fired power station boiler tubs. Can replace hard chrome plating and other products.
ARK 500   <35.0 Balance <5.0   <6.0     Nickel-Chrome-Moly wire has proven very effective as a coating material in paper mill digesters
ARK 600 AlMg/Al2O3 and AlMg/SiC particles in an aluminum matrix Cylinder pistons, brake discs, cylinder heads; aircraft installations such as aircraft carrier deflectors, ship decks, and helicopter decks; offshore oil platforms and other marine facilities and equipment.