HOME > Products > Steel Products > High-Spec H-Beams

Products

Steel Products

To Top of Products

High-Spec H-Beams

Chemical composition and mechanical properties meet stricter criteria than JIS standards.

Shape/Dimensions

Standard Type code Chemical composition Unit:(%) Unit:(%)
Spec code C
(max.)
Si
(max.)
Mn P
(max.)
S
(max.)
Cu
(max.)
Cr*6
(max.)
Sn
(max.)
Ceq Pcm
JIS G 3101

SS400

-

-

-

0.050

0.050

-

-

-

-

-

YHS-SS400

0.20

0.35

0.80 or lower

0.030

0.015

0.40

0.25

0.040

0.36
or lower

-

JIS G 3136

SN400B

0.20

0.35

0.60 – 1.40

0.030

0.015

-

-

-

0.36
or lower

(0.26 or lower) *4

YHS-SN400B

0.20

0.35

0.60 – 1.40

0.030

0.015

0.40

0.25

0.040

0.36
or lower

0.26 or lower

JIS G 3106

SM490A

0.20

0.55

1.65 or lower

0.035

0.035

-

-

-

-

-

YHS-SM490A

0.18

0.40

1.50 or lower

0.030

0.013

0.40

0.25

0.035

0.44
or lower

0.29 or lower

JIS G 3136

SN490B

0.18

0.55

1.60 or lower

0.030

0.015

-

-

-

0.44
or lower

(0.29 or lower) *4

YHS-SN490B

0.18

0.40

1.50 or lower

0.030

0.013

0.40

0.25

0.035

0.44
or lower

0.29 or lower

Standard Type code Mechanical properties Shape/
Dimensional
standard
Product's internal
properties
Spec code Yield point *1
(N/mm2
Tensile
strength
Yield
ratio *2
Elongation(%) Impact
value(0℃)*3
Steel
thickness(mm)
(N/mm2 (N/mm2 (%) Steel
thickness(mm)
(%) (J)
JIS G 3101

SS400

t≦16

245
or higher

400 – 510

-

5<t≦16

17
or higher

-

JIS G 3192

 

16<t≦40

235
or higher

16<t≦50

21
or higher

YHS-SS400

245 – 355

400 – 510

-

21 or higher

27
or higher

 
JIS G 3136

SN400B

6≦t<12

235
or higher

400 – 510

80
or lower

6≦t≦16

18
or higher

27
or higher

JIS G 3136

 

12≦t≦40

235 – 355

16<t≦50

22
or higher

YHS-SN400B

235 – 355

400 – 510

80
or lower

22 or higher

70
or higher

*5
JIS G 3106

SM490A

t≦16

325
or higher

490 – 610

-

5<t≦16

17
or higher

-

JIS G 3192

 

16<t≦40

315
or higher

16<t≦50

21
or higher

YHS-SM490A

325 – 445

490~610

80
or lower

21 or higher

70
or higher

*5
JIS G 3136

SN490B

6≦t<12

325
or higher

490 – 610

80
or lower

6≦t≦16

17
or higher

27
or higher

JIS G 3136

 

12≦t≦40

325 – 445

16<t≦50

21
or higher

YHS-SN490B

325 – 445

490 – 610

80
or lower

21 or higher

100
or higher

*5

Top

Carbon equivalent: Ceq (%)= C + Mn/6 + Si/24 + Ni/40 + Cr/5 + Mo/4 + V/14
Crack parameter in welding: Pcm (%)= C + Si/30 + Mn/20 + Cu/20 + Ni/60 + Cr/20 + Mo/15 + V/10 + 5B
*1.With a web thickness of 9 mm or less, upper limit does not apply.
*2.Applies to a flange thickness of 12 mm to 100 mm. With a web thickness of 9 mm or less, upper limit is
   85%.
*3.With a thickness of 12 mm or less, impact value does not apply.
*4.Ceq or Pcm applies under agreement between the parties concerned.
*5.Ultrasonic testing is done when agreed by the parties concerned. Acceptance criteria shall be Grade Y
   or equivalent of JIS G 0901.
*6.Cr content applies to lots manufactured since October 1, 2011.

For inquiries on sales of our Steel Products, call or email:

Contact Information

Top