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wholesale ASTM 4140 round bars polished or black surface

ASTM 4140 alloy round bar is a medium hardenability steel,which has good strength and good mechanical properties,good technology, high yield,we are 4140 round bar in China's manufacturers and suppliers,we can provide a large number quality 4140 round bar spot,the following details for you in detail about our 4140 alloy round bar basic chemical properties and production process.

wholesale 4140 round bars polished or black surface

Chemical content of ASTM 4140 round bar:


Thickness:6-16mm;outer diameter:20-600mm;length:1-12m or according to customer's special request

Technique:hot rolled,cold rolled

Mechanical properties:yield strength(Mpa)≥930;tensile strength≥1080;elongation≥12

Heat Treatment:forging,annealing,normalising,stress relieving,hardening,tempering

Surface treatment:mild steel plain finish, hot dip galvanized, color coated, ect.

Packaging:bundled with strong steel strips or with waterproof packing materials

Application:components with high requirements on toughness, e.g. gear wheels, pinions, connecting rods, parts for mechanical.

Bebon as one of the most popular Chinese 4140 alloy round bar supplier of steel,we can supply ASTM 4140 alloy round bar with high quality and competitive price. If you are interested in our products,please feel free to contact us,we will provide you the best quality service,welcome to inquire.