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 |
- |
|
| JIS G 3136 | SN400B |
0.20 |
0.35 |
0.60 – 1.40 |
0.030 |
0.015 |
- |
- |
- |
0.36 |
(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 |
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 |
0.29 or lower |
|
| JIS G 3136 | SN490B |
0.18 |
0.55 |
1.60 or lower |
0.030 |
0.015 |
- |
- |
- |
0.44 |
(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 |
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 |
400 – 510 |
- |
5＜t≦16 |
17 |
- |
JIS G 3192 |
|
16＜t≦40 |
235 |
16＜t≦50 |
21 |
|||||||
YHS-SS400 |
245 – 355 |
400 – 510 |
- |
21 or higher |
27 |
|||||
| JIS G 3136 | SN400B |
6≦t＜12 |
235 |
400 – 510 |
80 |
6≦t≦16 |
18 |
27 |
JIS G 3136 |
|
12≦t≦40 |
235 – 355 |
16＜t≦50 |
22 |
|||||||
YHS-SN400B |
235 – 355 |
400 – 510 |
80 |
22 or higher |
70 |
*5 | ||||
| JIS G 3106 | SM490A |
t≦16 |
325 |
490 – 610 |
- |
5＜t≦16 |
17 |
- |
JIS G 3192 |
|
16＜t≦40 |
315 |
16＜t≦50 |
21 |
|||||||
YHS-SM490A |
325 – 445 |
490～610 |
80 |
21 or higher |
70 |
*5 | ||||
| JIS G 3136 | SN490B |
6≦t＜12 |
325 |
490 – 610 |
80 |
6≦t≦16 |
17 |
27 |
JIS G 3136 |
|
12≦t≦40 |
325 – 445 |
16＜t≦50 |
21 |
|||||||
YHS-SN490B |
325 – 445 |
490 – 610 |
80 |
21 or higher |
100 |
*5 | ||||
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.
