PTJ Manufacturing Shop

PTJ Manufacturing Shop

Which alloy steels are often used in machining auto parts ?

Machining alloy steels auto parts

PTJ Manufacturing Shop is a professional manufacturer specializing in the precision machining of high-quality alloy steel parts. It is one of the few well-known manufacturers in Dongguan with auto parts machining qualification. At present, the company has successfully passed the IATF16949 quality management certification in the automotive field and strictly followed Its execution.

5-axis linkage machiningWe all know that the use of alloy steel is indispensable when manufacturing auto parts. Today, PTJ Manufacturing Shop lists ten commonly used alloy material models and their corresponding fields of use.

1.50Mn2

Used to manufacture large parts and components that work under high stress and strong wear conditions, such as universal joint shafts, gears, connecting rods, crankshafts, small shafts, spindles working in rolling bearings on ZTE, and large gears. Transmission spline shafts on automobiles and mandrels subjected to impact loads can also be used to manufacture leaf springs and coil springs;

2.45Mn2

Used to manufacture parts that work under high stress and wear conditions. When machining parts with a diameter of less than 60mm, the material characteristics are similar to those of 40Cr steel. It can be used for universal joint shafts and axles of automobiles, agricultural machinery, tractors and general machinery. , connecting rod cover, shaft, friction disc, gear, worm, gear shaft, electric car and steam engine axle, car shaft and heavy load machine, etc., and nuts and bolts in cold-drawn state;

3.40Mn2

Suitable for manufacturing parts and components under no-load conditions, such as semi-axles, crankshafts, shaft cores, worms, piston rods, joysticks, connecting rods, levers, etc., as well as screws, bolts, and reinforcement rings under load working conditions. , springs and other parts that need to be modulated, when manufacturing parts with a diameter of less than 40mm, the characteristics are close to 40Cr steel;

4.35Mn2

This material is mainly used to manufacture connecting rods, crankshafts, mandrels, half shafts, joysticks, fan fittings, and cold head bolts with a diameter of less than 15 mm and mechanical components subjected to higher stresses. When manufacturing parts with a diameter of less than 20 mm, Can replace 40Cr steel material;

5.30Mn2

This material is mainly used to manufacture fasteners with small cross-sections, such as cars and tractors, general frame rails for agricultural machinery, gears for gearboxes, cold head bolts, shafts, etc., suitable for manufacturing in the field of mining machinery. Carburizing parts with high strength of the heart, such as the rear axle and journal of the crane;

6.20Mn2

It is more suitable for manufacturing parts with small cross-section, generally less than 50mm in diameter. This material can replace 20Cr steel, and is often used to make carburized gears and relatively small shaft core products, as well as cross pins that are not very demanding. Piston pins, valve rams and oil collector sleeves can also be used as quenched and tempered steel, for example to make cold head bolts;

7.35SiMn

Used to manufacture medium-speed, medium-load or high-load but low-impact parts, such as transmission gears, connecting rods, mandrels, electric axles, worms, flywheels, etc., can also be used to manufacture turbine impellers, 400° C important fastener products;

8.27SiMn

Hot stamped parts used to make high toughness and wear resistance can also be used to make parts without heat treatment, or used after normalizing, such as tractor track pins, and can also be used to make cast parts;

9.30Mn2MoW

It is suitable for the manufacture of parts with relatively large load, such as connecting rod bolts, tie rods, crankshafts, gears, etc. It can replace 30CrNi3 to manufacture important modulation parts with a section diameter less than 80mm. When surface hardening process is used, it can manufacture larger cross-sectional area. Components;

10.20MnV

It is suitable for the manufacture of boilers, high-pressure vessels, large high-pressure pipes, etc. It can also be used for stamping steel, such as bicycle chains, gears, piston pins, etc. It can also be used to manufacture mine links with a diameter of not more than 20mm;

PTJ Manufacturing Shop is currently equipped with more than 100 sets of high-precision CNC telling equipment, including Doosan Auto-milling compound, Jinshang, Star, Nomura and other brands of CNC machine, 850 and four-axis, five-axis linkage machining center totaling more than 50 sets. The precision of the product can reach 0.01mm, which has significant advantages in the processing of precision parts of alloy steel.


PTJ Machining Capabilities

Automatic Bar Machining capacity for parts from 1/16" to 2 5/8”
CNC Turning – CNC multi-axis machining centers for superior speed & flexibility
Custom Machining - expert machined components delivered on time
Multi Spindle Machining- Davenport, Euro turn, New Britain & Acme Gridley
Screw Machine Products – precision components from a broad variety of materials & Equipment
Swiss Machining – micro-parts to 1-1/4 round diameter providing speed, high capability including precision tolerances and specialized finishes
High Volume Machining – Specialized in machined parts exceeding 1,000 pieces up to millions of pieces for optimum efficiency
CNC Milling - Machining from bar stock, plate or block metal using up to 3 axis of motion
5 axis (11 axis) Machining – Multi Axis Multi spindle technology for completing complex parts efficiently in one operation. C=0 sampling plan & equipment versatility provide one stop shop capability for a variety of applications

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