4140 seamless tube chemical composition and mechanical properties

- Feb 13, 2021-

Grade

C

Mn

S

Ni

Cu

0.38~0.45

0.50~0.80

≤0.035

≤0.3

≤0.3

Tensile Strength (Mpa)

Elongation in 2 in.%

Hardness



≧≧12

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≤217HB



Characteristic:  4140 steel tube has good processing and anti-fatigue performance, which belongs medium hardenable steel. 4140 heat treatment has good strength and good comprehensive mechanical properties, high yield strength. The highest working temperature is 427 ℃ . It has good toughness, quenching deformation high creep strength and lasting strength under high temperature. Application:Manufacturing more than 35CrMo steel strength and higher quality forging section, such as locomotive traction with a large gear, supercharger transmission gear and rear axle. It can be also used well drilling pipe joints and salvage tools, and can be also used for bending machines and other molds.


Sanitary welded seamless Stainless Steel tube for food

 

Proudct information 

Standard

ASTM A554,ASTM A312





Material Grade

201,202,304,316,316L,430,409L,430,410,420J1,420J2

 





Main Material

 

a) 201 (Ni0.8%-1%)   

b) 202 (Ni: 3.0%-4.0%)
c) 304 (Ni: 8%  Cr: 18%)

d) 316 (Ni: 10%  Cr: 18%)





Size Range

139mm-1600mm  ETC.





Thickness

0.5-30mm





Length

6m or as customers' request





 

Tolerance

a) Outer Diameter:  +/- 0.2mm





b) Thickness: +/- 0.02mm






c) Length: +/- 5mm






Surface

180G, 320G Satin/Hairline

400G, 600G  Mirror finish





Application

handrail,railing, staircase, weldmesh screen,door,window, balcony,fence,bench,furniture,etc





Test

Squash test, extended test, water pressure test, crystal rot test, heat treatment, NDT






Tensile Strength

≥535

≥520

≥520

≥520

Yield Strength

≥245

≥205

≥205

≥205


Extension

≥30%

≥30%

≥35%

≥35%


Hardness (HV)

<105

<100

<90

<90


 

Sanitary welded seamless Stainless Steel tube for food

Sanitary welded seamless Stainless Steel tube for food

 

Performance:

Grade 304 stainless steel is the most versatile and the most widely used of all stainless steels. Its chemical composition, mechanical properties, weldability and ncorrosion/oxidation resistance provide the best all-round performance stainless steel at relatively low cost. It also has excellent low 

temperature properties and responds well to hardening by cold working. If intergranular corrosion in the heat affected zone may occur, it is suggested that 304L be used.

Typical Applications

304 is used in all industrial, commercial and domestic fields because of its good corrosion and heat resisting properties. Some applications include:

Tanks and containers for a large variety of liquids and solids.

Process equipment in the mining, chemical, cryogenic, food, dairy and pharmaceutical industries.

  

Sanitary welded seamless Stainless Steel tube for foodSanitary welded seamless Stainless Steel tube for food

 

 

Our Services

Cangzhou Steel Pipe Group (CSPG)Co.,Ltd.

No.92 JieFang East Road ,Cangzhou City, Hebei,P.R.China.

CSPG  has more than eighteen years history company which located in Lecong Iron and Steel World, a well-known steel distribution center in China, with superior geographical position and convenient water and land transportation. 


We are a direct-selling manufacturer specializing in the research and development of spiral steel pipes, steel spiral pipes, anti-corrosion steel pipes inside and outside. Since its inception, the company has been guided by a brand-new thinking of steel pipe product market based on the business philosophy of honesty, pragmatism and knowledge-seeking.

 

 

Our services

 Pre-sale Service

 1.Sample can be offered.

 2. We have full stock,and can deliver pipes on time. 

 3.OEM and ODM order are welcome, Logo printing or design are available. 

4.Good Quality + Factory Price + Quick Response + Reliable Service. 

5. We have High efficiency foreign trade team.  

6. Experienced in manufacture and offer high quality steel pipes .

After you choose

1.We will count cheapest shipping cost and make invoice to you at once.

2.Check quality piece by piece, the pipes will be sent in 1-2 working day after the payment,

3. Email the tracking No. for you to track the parcels.