sae 4140 chromoly steel | sae 4140 chromoly steel manufacture | good toughness sae 4140 chromoly steel alloy

4140 steel has high strength, hardenability, good toughness, small deformation during quenching, and high creep strength and durable strength at high temperature. It is used to manufacture forgings requiring higher strength and larger quenched cross section than 35CrMo steel, such as large locomotive traction gear, supercharger transmission gear, rear axle, highly loaded connecting rod and spring clip, and can also be used for oil drilling.

product name:sae 4140 chromoly steel | sae 4140 chromoly steel manufacture |  good toughness sae 4140 chromoly steel alloy

keyword:sae 4140 chromoly steel,steel products

Usage: It is used to manufacture forgings that require higher strength and larger quenched and tempered sections than 35CrMo steel, such as large gears for locomotive traction, supercharger transmission gears, rear axles, connecting rods and spring clips that are heavily loaded, and can also be used for Drill pipe joints and fishing tools for oil wells below 2000m, and can be used for molds of bending machines, etc.

Other Steel Types:5140 /4140 / 4340 / 4142 / 15CrMo / 6150 / 38CrMoAI / 8620 .....

Serve:OEM/ODM,Sample free and 24 hours online

Delivery status:With heat treatment (normalized, annealed or high temperature tempered) or without heat treatment Goods, the delivery status should be specified in the contract

Heat treatment:1. Normalizing: Heat the furnace to 900°C~930°C, keep the thickest cross section per inch at this temperature for one hour, and cool in air.2. Heat to austenitizing at a temperature of 860℃~885℃, and keep the thickest cross section per inch for one hour at this temperature3. Normalizing or oil quenching, and cooling to a maximum temperature of 121°C4. Temper at a temperature that achieves the following mechanical properties. The thickest cross-section per inch is held for one hour at the tempering temperature, and the tempering temperature range is 640 ° C ~ 680 ° C5. For each heat treatment process, a heat treatment chart must be drawn.6. The mechanical property test shall be carried out in accordance with the stipulations of ASTM. A-370. The sample material used for the test shall be cut from the test bar of the same furnace steel. The casting or forging represented by the sample and the test bar shall be in the same furnace. The test bar shall be heat treated in the same furnace together with the charge.7. The mechanical properties should meet the following requirements: (Tested with a test bar, sampling according to APT 6A, 110K standard) - Tensile strength minimum lb/inch (862) Yield strength minimum lb/inch 110.000 (758) 2 inches The minimum value of elongation is 15% and the minimum value of section shrinkage rate is %40. Brinell hardness HB285 ~ take, the casting or forging represented by the sample and the test bar must be in the same furnace, and the test bar should be heat treated in the same furnace together with the charge.8. The mechanical properties should meet the following requirements: (tested with test bars, sampling according to APT 6A, 110K standard) - minimum tensile strength lbs/inch (862) minimum yield strength lbs/inch (758) 2 inches Minimum elongation %15 Minimum shrinkage of section %40 Brinell hardness HB285～3529. Marking: Each part shall be printed with heat treatment marks and hardness with low stress steel stamp.

Company strength

  Dongguan Songshun Mould Steel Co., Ltd. is an Indusrtial and trading company with 2 warehouses that manufactures good & high quality kinds of steels starting from 2012. The company provides the customized products and OEM service. What´s more, we keep the mass stock of over 20000 tons. In those years, we offer a wide range of steels to our customers from all over the world. And we enjoy high praise among them.

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