China 42crmo4 4140/4142 alloy seamless steel pipe Precision Seamless Steel Tube Factories

Short Description:

42CrMo steel belongs to alloy structural steel in terms of material classification. It has good mechanical properties and machinability, and is widely used. There are mainly two types of materials, plate and round bar. Its comprehensive performance is better than 40Cr, which has been recognized by the industry.

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Product Description

42CrMo steel belongs to ultra-high strength steel, with high strength and toughness, good hardenability, no obvious temper brittleness, high fatigue limit and multiple impact resistance after quenching and tempering treatment, and good low temperature impact toughness. 42CrMo steel is suitable for manufacturing large and medium-sized plastic moulds requiring certain strength and toughness.

Product Parameter

Standerd	GB ASTM ISO JIS DIN
Steel pipe grade	42CrMo 38XM 4140 4142 SCM440 42CrMo4 708M40
Lengh	3-12m
Outer Diameter	32-756mm
wall thickness	2.5-100mm
Processing Service	Cutting or according to the customer's demand
Packaging Details	Bare packing/wooden case /waterproof cloth
Terms of Payment	T/T L/C at sight
20 feet container contains dimension	Length under 6000mm
40 feet container contains dimension	Length under 12000mm
Samples	Free samples are provided but the freight is paid by the buyer
Min order	1 Ton

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Processing services

CEC649BB-E727-4C44-BDEA-1E8D4D878AE9_1_105_c

Advantage

1,Our company has a large number of inventory, can meet your needs in time.

2, provide relevant information in time according to the customer's demand to ensure the quantity and quality of products.

3、Relying on the country's largest steel market, one-stop with all the products you need to save costs for you.

Chemical Composition

C: 0.38～0.45 Si:0.17~0.37 Mn:0.50~0.80 Cr: 0.90～1.20

Ni:≤0.30 P:≤0.035 S:≤0.035 Cu:≤0.030 Mo: 0.15～0.25

Product Application

40Cr and other alloy structural steels are suitable for shaft parts with medium precision and high speed. After quenching, tempering and quenching, these steels have better comprehensive mechanical properties. After quenching and tempering, this kind of steel is used to make mechanical parts which can bear medium load and medium speed, such as steering knuckle, rear half shaft of automobile, gear, shaft, worm, spline shaft and top sleeve of machine tool.