世界各国工字钢标准

WIDE FLANGE SHAPES

A pplications 2

2Metropolitan Government Office building

Opera House

Sound insulating walls Cofferdams High-rise building Station building Warehouse

M anufacturing Process 3

Rough universal mill Cooling bed Roller straightener Shipment of products

3

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S pecifications

4(1) Specifications

(

)(3)

Available Size (Nominal )(4) Available Length Note : Cut-off pitch 100mm or 1 inch.1. ASTM 2. BS ASTM A36, A572,

A992 etc.

BS 4360-43 (A, B*, C*, D*, DD*)

BS 4360-50 (A, B, C*, D*)

BS 7191-Gr275, 355

3. JFE STEEL STANDARD 1 BASE SIZE : 20 ~ 98 ft (6 ~ 30m)2 HEAVY SIZE : Maximum Unit Weight 1

4.2 Mt HBL-JH450*

4. JIS JIS G 3136 (SN400A, B, C, SN490B, C)

JIS G 3101 (SS400)

JIS G 3106 (SM400A, B, C, SM490A, B, C,SM490YA, YB, SM520B)

JIS G 3114 (SMA400AP, SMA400AW, SMA490AP, SMA490AW)

*Note : Specifications marked with an asterisk may be subject to negotiation and acceptance.

*1 : HBL-JH450 : Titanium, max 0.04% ; Boron, max 0.0005 to 0.003% ; Nitrogen, max 0.012% ;Tin, max 0.03%.

*2 : Shapes to 426lb/ft [634kg/m]

*3 : Shapes over 426lb/ft [634kg/m]

*4 : For each reduction of 0.01% below the specified carbon maximum, an increase of 0.06% manganese above the specified maximum will be permitted up to a

maximum of 1.50%.

*5 : Alloy content shall be in accordance with type 1, 2, 3 or 4 and the contents of the applicable elements shall be reported on the test report.

*6 : For wide flange shapes over 426lb/ft [634kg/m] elongation in 2 in. [50mm] of 19% minimum applies.

*7 : Verification of the specifed impact value to be carried out only when option is invoked by the purchaser.

*8 : Minimum T. S. 480N/mm for material over 63mm thick.

*9 : Up to and including 9mm thick, 16% for grade 43 and 15% for grade 50.

Carbon equivalent : (JIS) CE = C + Mn/6 + Si/24 + Ni/40 + Cr/5 + Mo/4 + V/14

(ASTM) CE = C + Mn/6 + (Cr + Mo + V)/5 + (Cu + Ni)/15

(BS) CE = C + Mn/6 + (Cr + Mo + V)/5 + (Cu + Ni)/15

*10 : Requirements of charpy V-notch impact test shall not apply unless specified in the order.

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For SN400B, SN400C, SN490B, SN490C, SM490B, SM490YB, and SM520B, the impact test shall be made for a thickness of more than 12mm and the Charpy absorption energy shall be obtained as an average for three test pieces.

SM490YA, SM490YB and SM520B having a flange 40mm thick or moer are not manufactured usually.

If you want these products, consult with us beforehand.For SN400B, SN400C, SN490B and SN490C, the upper limit of yield point or proof stress does not apply to the Wide Flange shapes having t2 of 16mm or

less and t1 of 9mm or less.

For SN400B, SN400C, SN490B and SN490C, the upper limit of yield ratio shall be 85% for the Wide Flange shapes having t2 of 16mm or less and t1 of 9mm or less.

For SN400C and SN490C, the method of the characteristic test in the thickness direction shall be in accordance with JIS G3199.

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