(Properties minima unless stated)

Country 国家 /

Specification 规格 /

Grade 钢号

Chemical Composition

化学成份  %

( maximum 最大 )

Mechanical Properties

机械性能

Bend Test

弯曲试验
C Si Mn P S CEV1)

Yield Stress

降伏强度

N / mm2

Tensile Strength

抗拉强度

N / mm2

Elongation2)3)  

伸长率 %

(GL = Gauge Length)
Japan 日本标准 ( G3112 : 1991 )

Round Bar

SR235 ( SR24 )

-

-

-

0.05

0.05

-

235

380 ~ 520

20, GL=8d, d<25mm

24, GL-4d. d>25mm

180o, all sizes          1.5d
SR 295 ( SR30 ) - - - 0.05 0.05 - 295 440 ~ 600

18, GL=8d, d<25mm

20, GL=4d, d>25mm

180o, £ 16mm          1.5d

180o, > 16mm            2d

Deformed Bar

SD295A ( SD30A )

-

-

-

0.05

0.05

-

295

440 ~ 600

16, GL=8d, d<25mm

18, GL=4d, d>25mm

180o, £ 16mm           1.5d

180o, > 16mm             2d
SD295B ( SD30B ) 0.27 0.55 1.50 0.04 0.04 - 295 ~ 390 440

16, GL=8d, d<25mm

18, GL=4d, d>25mm

180o, £ 16mm           1.5d

180o, > 16mm             2d
SD345 ( SD 35 ) 0.27 0.55 1.60 0.04 0.04 0.50 345 ~ 440 490

18, GL=8d, d<25mm

20, GL=4d, d>25mm

180o, £ 16mm           1.5d

180o, > 16mm £ 41m    2d

180o, 50mm              2.5d
SD390 ( SD40 ) 0.29 0.55 1.80 0.04 0.04 0.55 390 ~ 510 560

16, GL=8d, d<25mm

18, GL=4d, d>25mm

180o, all sizes           2.5d 
SD490 ( SD50 ) 0.32 0.55 1.80 0.04 0.04 0.60 490 ~ 625 620

12, GL=8d, d<25mm

14, GL=4d, d>25mm

90o, £ 25mm              2.5d

90o, > 25mm                3d

Singapore 新加坂标准( S.S.2 : 1987 )

Round Bars

Grade 250

0.25

-

-

0.06

0.06

0.42

250

Min 15% > the actual yield stress

22 ( GL=5d )

180o, all sizes             2d

Deformed Bars

Grade 460

0.30

-

-

0.05

0.05

0.51

460

12 ( GL=5.65 ÖSo=5d) 

180o, all sizes             3d
Britain 英国标准 ( BS 4449 : 1978 )

Round Bars

Grade 250

0.25

-

-

0.06

0.06

0.42

250

Actual yield stress X 1.15

22 ( GL=5d )

180o, all sizes             2d

Deformed Bars

Grade 460

0.30

-

-

0.05

0.05

0.51

460

12 ( GL=5.65 ÖSo=5d)

180o, all sizes             3d

U.S.A 美国标准 ( ASTM A615-86 ) Deformed and Plain Round Bars                                                              

 GL = 8 inches 180o
Grade 40 - - - 0.06 - -

276

(40000 psi)

 483

(70000 psi)

10, 22mm        11

13, 16, 20mm   12

10, 13, 16mm            3.5d

20mm                          5d
Grade 60 - - - 0.06 - -

414

(60000 psi)

621

(90000 psi)

10, 13, 16, 20mm  9

22, 25mm              8

28, 32, 35, 40,         57mm                     7

10, 13, 16mm            3.5d

20, 22, 25mm               5d

28, 32, 35mm               7d

40mm                          9d