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20# Carbon Structural Steel

20# Carbon Structural Steel

Place of Origin : China
Brand Name : XJS
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20# carbon structural steelis very common is china market under GB/T 699 standard. For GB/T 699 20# carbon steel,

20# steel is widely used in the various fields. it is mainly applied to machinery parts which requires high toughness and bears small stress, such as lever, axle sleeve, straining beam. It can also be used in the line of agricultural machinery or cars, to produce carburization or carbonitriding parts, such as lever shaft, plunger.

20# steel is usually produced under the followed procedures: EAF arc furnace + LF purify affinage + VDF + ingot steel(bottom gating /argon) + forged + annealing + black polishing (turnery) + GB/T6402-92 ΙΙ UT test + smooth edges with sawing .

chemical composition

Grade

C

Si

Mn

P

S

Ni

Cr

Cu

20#

0.17-0.23

0.17-0.37

0.35-0.65

≤0.035

≤0.035

≤0.3

≤0.25

≤0.25


Physical properties


Grade

T.S.
Mpa

Y.S.
Mpa

A,%

Z,%

Hardness,
(annealing or tempering) HB,max

Forging ratio

Grain Size
(level)

Nonmetal ratio

20#

≥410

≥245

≥25

≥55

156

≥ 4:1

≥ 6

≤ 2.0



Product Tags:

Carbon Structural Steel

      
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20# Carbon Structural Steel Images

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