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Tubes for mechanical and structure purpose

 

Advantages of Tubes China mechanical tubes and structure tubes:

1.Both China and International Standard Available.

2.Both Cold Draw and Hot rolled tube Available.

3.Large size and Heavily wall thickness tube Available.

4.Only Top plant tube Available on Tubes China.

5.Best performance on tube,  tube without waves.

Material:10#, 20#, 35#, 45#, Q345B, 16Mn

              SAE1010, 1020, 1030, 1035, 1040, 1045, 4130, 4135, 4140, 4145

              ST37, ST44, ST52, CK20, CK45, E355 and etc

              Other raw material also available.

Standard: GB/T 8162, ASTM A519, DIN 2391, DIN 1629, EN10297 and etc.

Size: OD:20mm~1200mm;  WT:3 to 55mm

Some sample chemical composition and typical tensile properties, Harness diagram.

 

● Chemical Composition Limits,%,as per ASTM A519

Grade

C

Mn

P

S

Si

Ni

Cr

Mo

1030

0.28-0.34

0.60-0.90

0.040

0.050

--

--

--

--

1035

0.32-0.38

0.60-0.90

0.040

0.050

--

--

--

--

1040

0.37-0.44

0.60-0.90

0.040

0.050

--

--

--

--

1045

0.43-0.50

0.60-0.90

0.040

0.050

--

--

--

--

4130

0.28-0.33

0.40-0.60

0.040

0.040

0.15-0.35

--

0.80-1.10

0.15-0.25

4135

0.33-0.38

0.70-0.90

0.040

0.040

0.15-0.35

--

0.80-1.10

0.15-0.25

4140

0.38-0.43

0.75-1.00

0.040

0.040

0.15-0.35

--

0.80-1.10

0.15-0.25

4145

0.43-0.48

0.75-1.00

0.040

0.040

0.15-0.35

--

0.80-1.10

0.15-0.25

The purchaser may specify the following maximum amounts: copper, 0.3%; aluminum, 0.05%; and oxygen, 0.0015%.

● Typical Tensile Properties, Hardness and Thermal Condition for some the More Common Carbon and Alloy steels

Grade Designation

ConditionA

Ultimate Strength

Yield Strength

Elongation in 2 in.or 50 mm,%

Rockwell Hardness B Scale

ksi

MPa

ksi

MPa

1035

HR

65

448

40

276

20

72

CW

85

586

75

517

5

88

SR

75

517

65

448

8

80

A

60

414

33

228

25

67

N

65

448

40

276

20

72

1045

HR

75

517

45

310

15

80

CW

90

621

80

552

5

90

SR

80

552

70

483

8

85

A

65

448

35

241

20

72

N

75

517

48

331

15

80

4130

HR

90

621

70

483

20

89

SR

105

724

85

586

10

95

A

75

517

55

379

30

81

N

90

621

60

414

20

89

4140

HR

120

855

90

621

15

100

SR

120

855

100

689

10

100

A

80

552

60

414

25

85

N

120

855

90

621

20

100

A The following are the symbol definitions for the various conditions:

HR- Hot Rolled

SR- Stress Relived

A- Annealed

N- Normalized 

 



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