美国标准

                           

( Welded and Seamless )                                                                                                                                   Properties Minima Unless Stated

Grade

钢号

Chemical Composition 化学成份 %

( Maximum 最大 )

Tensile Strength

抗拉强度

Yield Stress

屈服强度

Elongation

 伸长率 on

2 in

Flattening Test

环装压扁试验

Others

其它

C

Mn

P

S

ksi ( N / mm2 )

ksi ( N / mm2 )

%
A 0.26 - 0.04 0.05 45 ( 310 ) 39 ( 228 ) 25

Weld portion

H = 2/3 D

The other side of weld

H = 1/3 D

 If necessary, stress relieved annealing
B 0.26 - 0.04 0.05 58 ( 400 ) 46 ( 317 ) 23
C 0.23 1.35 0.04 0.05 62 ( 427 ) 50 ( 345 ) 21

 

欧洲标准

                                                                                                                                                                          Properties Minima Unless Stated

Grade

钢号

Chemical Composition 化学成份 %

( Maximum 最大 )

Tensile Strength

抗拉强度

Yield Stress

屈服强度

Elongation 

伸长率 %

No. 5 Test piece

Impact Strength 冲击功 10 X 10mm

specimen

C

Si

Mn

P

 S

N / mm2

N / mm2

%

oC

 J
S275J0H 0.20 - 1.50 0.04 0.04 410 ~ 560 275 201) 0 27
S275J2H 0.20 - 1.50 0.035 0.035 410 ~ 560 275 201) -20 27
-20 27

S355J2H

0.22

0.55

1.60

0.035

0.035

490 ~ 630

355

201)

Notes : 1)    Elongation at 17% for sizes £ 60mm square or equivalent rectangular or round sections

 

日本标准

          

                                                                                                                                                                          Properties Minima Unless Stated

Grade

钢号

Chemical Composition 化学成份 %

( Maximum 最大 )

Tensile Strength1)2)

屈服强度

Yield Stress1)2)

降伏强度

Elongation 

伸长率 %

No. 5 Test piece

C

Si

Mn

P

 S

N / mm2

N / mm2

%

STKR 400

( STKR 41 )

0.25

-

-

0.04

0.04

400

245

23

STKR 490

( STKR 50 )

0.18

0.55

1.50

0.04

0.04

490

325

23

Notes : 1)    When the tube under 8mm in thickness is subjected to tensile test, the minimum value of elongation shall be calculated by subtracting 1.5% from the value of elongation given in above table or each decrease of 1mm and rounding off the result to a whole number according to JIS Z8401

            2)    When a  tensile test piece is to be taken from the welded steel square tube, one shall be taken form a seamless portion.

 

日本标准

           Properties Minima Unless Stated  

Designation

钢号

Chemical Composition 化学成份 %

( Maximum 最大 )

Tensile Strength2)

抗拉强度

Elongation2) 伸长率% (min.最小)

Test Piece

测试片

 

Bending Test2) 弯曲试验

C

Si

Mn

P

 S

N / mm

 thickness 厚度 ( mm )

Bending

Angle

弯曲角度

 Inside Radius 半径内

Test Piece

测试片

Thickness

厚度  t

( mm )
1.2£t<1.6 1.6£t<3.0 3.0£t<6.0 6.0£t<13.0

t£3.0

 3.0<t£13.0
SPHT 1 0.10 0.351) 0.5 0.04 0.04 270 30 32 35 37 No. 5 rolling direction 180o Flat on itself 0.5 t No. 3 rolling direction
SPHT 2 0.18 0.35 0.6 0.04 0.04 340 25 27 30 32 180o 1.0 t 1.5 t
SPHT 3 0.25 0.35 0.30 ~ 0.90 0.04 0.04 410 20 22 25 27 180o 1.5 t 2.0 t
SPHT 4 0.30 0.35 0.30 ~ 1.00 0.04 0.04 490 15 18 20 22 180o 1.5 t 2.0 t

Notes :   1)    When agreed upon between the concerned parties, Si content may be modified to 0.04% max.

             2)    Mechanical test values are not applicable to the irregular portions at either end of the steel strip.

 

英国标准

 

Grade5)

钢号

 BS 4360

Equivalent

  Type of

Oxidation3)

氧化方法

Chemical Composition 化学成份 %

Mechanical Properties 机械性能 (Minimum最小)

C

Si

Mn

P

S

N1)2)

Yield Stress2)

N/mm2

屈服强度

Tensile Strength

N/mm2

抗拉强度

Elongation3)4)

伸长率 %

Impact Test

冲击功

J

for t£65

Average 3 tests

Thickness

厚度 t mm

Thickness 

厚度  t mm

Thickness

厚度  t mm

Thickness

厚度  t mm

t£40

40<t£65

t£16

16<t£40

40<t£65

t£3

3<t £65

t£40

40<t £65

maximum 最大

 0oC -20oC
S275J0H 43C FN 0.20 0.22 - 1.50 0.040 0.040 0.009 275 265 255 430/580 410/560 22 (20) 21 (19) 27 -
S275J2H 43D FF 0.20 0.22 - 1.50 0.035 0.035 - 275 265 255 430/580 410/560 22 (20) 21 (19) - 27
S355J0H 50C FN 0.22 0.22 0.55 1.60 0.040 0.040 0.009 355 345 335 510/680 490/630 22 (20) 21 (19) 27 -
S355J2H 50D FF 0.22 0.22 0.55 1.60 0.035 0.035 - 355 345 335 510/680 490/630 22 (20) 21 (19) - 27
Notes:

1) It is permissible to exceed the specified values provided that for each increase of 0.001% N, the P max. content will be reduced by 0.005%, the ladle N content however shall be 0.012% max.

2) The max. value for N does not apply if min. 0.02% of Al present

3) FN = rimming steel not permitted, FF = fully killed steel containing N binding elements, GL = 5.65ÖSo

4) Values in brackets are transverse direction properties