时间:2019-07-10 资料来源:思科 点击:

  By adopting the process including high quality hot iron+ scrap melting, LF+RH refining, precise chemical composition controlling, serous control and nature transforming of inclusion, bridge steel made by TISCO INDUSTRIAL CO.,LIMITED has stable and excellent comprehensive properties, such as high strength, high toughness, low yield strength ratio, high lamellar tearing resistance and easy welding, capable of meeting the quality requirement of large highway and railway bridges.

 Typical Steel Grades/Specifications

钢/等级

规格

尺寸范围

交货条件

Q235QC / D / E.
Q345QC / D / E.
Q370QC / D / E.
Q420QC / D / E.

GB / T714或技术协议

5〜12

AR / NR / N / TMCP

> 12〜100

CR / NR / N / TMCP

> 100〜150

Cr / nr / n

> 150〜250

N

Q460QC / D / E.

5〜12

AR / NR / N / TMCP / QT

> 12〜100

CR / NR / N / TMCP / QT

> 100〜150

n / qt.

Q500Q / D / E.
Q550Q / D / E.

5〜70

TMCP / TMCP + T / QT

> 70〜150

tmcp + t / qt

A709 GR36(250)
A709 GR50(250)

ASTM A709 / A709M或技术协议

5〜12

AR / NR / N / TMCP

> 12〜100

CR / NR / N / TMCP

> 100〜150

N

A709 GR50W(345W)
A709 HPS GR50W(345W)

5〜100.

AR / NR / TMCP / QT

A709 HPS GR70W(485W)

5〜100.

TMCP / TMCP + T / QT

A709 HPS GR70W(690W)

5〜100.

Qt.

S235J0 / JR / J2 / N / NL / M / ML
S275J0 / JR / J2 / N / NL / M / mL
S355J0 / JR / J2 / K2 / N / NL / M / mL
S450J0
S420 / n / nl / m / ml
S460 / n / nl / m / ml
S500Q / QL / QL1
S690Q / QL / QL1

EN10025或技术协议

5〜12

AR / NR / N / TMCP

> 12〜100

CR / NR / N / TMCP

> 100〜150

Cr / nr / n

> 150〜250

N

 Chemical Composition (wt%)

等级/等级

C

SI.

m

P.

S.

Nb,v,ti

Q345Q.

≤0.18

0.15-0.40

≤1.7

≤0.015.

≤00.005

NB + V +Ti≤0.12

Q370Q.

≤0.18

0.15-0.40

≤1.7

≤0.012.

≤00.005

NB + V +Ti≤0.12

Q420Q.

≤0.18

0.15-0.40

≤1.7

≤0.012.

≤00.005

NB + V +Ti≤0.12

Q460Q.

≤0.18

0.15-0.40

≤1.7

≤0.012.

≤00.005

NB + V +Ti≤0.12

Q500Q.

≤0.09

0.15-0.40

≤1.7

≤0.010.

≤00.005

NB + V +Ti≤0.12

A709 GR.50.

≤0.18

0.15-0.40

≤1.6

≤0.015.

≤00.005

NB + V +Ti≤0.12

A709 HPS 70W

≤0.11.

0.15-0.40

≤1.5

≤0.012.

≤00.005

NB + V +Ti≤0.12

  Mechanical Properties

成绩

尺寸(mm)

rel(mpa)

RM(MPA)

一种%

-40℃KV2(J)

Q370QE.

10.

420.

565.

28.

169.

60.

416.

570.

32.

296.

Q420QE.

10.

485.

640.

31.

202.

60.

470.

620.

32.

310.

Q460QE.

40

526.

672.

29.

265.

100.

496.

630.

28.

212.

Q500QE.

20.

570.

695.

26.

320.

64.

555.

680.

25.

310.


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