Tension

Páginas: 48 (11779 palabras) Publicado: 16 de diciembre de 2012
STEEL PLATES

ABRASION RESISTANT

4-24

ASTM A36

4-20

ASTM A283

4-40

ASTM A285

4-60

ASTM A242

4-8

ASTM A515

4-10

ASTM A516

4-12

CSA G40.21
STRUCTURAL QUALITY STEELS

4-14

PRESSURE VESSEL QUALITY PLATE
ASTM A-285
ASTM A-515
ASTM A-516

4-60
4-10
4-12

QUENCHED & TEMPERED STEEL PLATE

4-25

Q & T 100
Q & T 130
ABRASION RESISTANT

4-264-27
4-28

STEEL PLATE WEIGHT CHART
FLOOR PLATE
TOLERANCES

4-29
4-36
4-37

4
Steel
Plates

4MPage 1

ASTM A 36
Specification for Structural Steel Plate

DISCUSSION
ASTM A 36 steel is a widely accepted general purpose structural
quality steel offering a constant 36 ksi min. yield point for all thicknesses of material. It is widely used in the construction of buildings,bridges and other structures by means of welding, bolting or
riveting. This steel is useful because of its wide availability.
NOTCH TOUGHNESS
While these steels are not normally recommended where low temperature notch toughness is critical, they have been used in many
bridges and other dynamically loaded structures at temperatures
at least as low as those found in the settled areas of Canada.Some improvement in the low temperature notch toughness can
be obtained by specifying KILLED FINE GRAIN PRACTICE on all
thicknesses, but no consistent minimum value can be expected
unless impact testing has been specified by the purchaser.
CORROSION RESISTANCE
These steels have the same atmospheric corrosion resistance as
plain carbon steels, however, this may be enhanced by specifyingcopper additions.
4
Steel
Plates

WELDABILITY
ASTM A 36 steel can be easily welded, using good shop or field
practices by all of the usual methods; shielded metal-arc, submerged-arc, gas metal-arc and resistance welding.
GAS CUTTING
This material can be gas cut using good shop or field practices.
Cutting of this material generally does not require preheating, but
the steel temperature shouldnot normally be below 50°F during
cutting.
FORMABILITY
ASTM A 36 can be cold formed using conventional equipment and
good shop practices. Suggested minimum cold forming radii are
given in the table.
Cont’d

4MPage 2

ASTM A 36 (cont’d)
Specification for Structural Steel Plate

FABRICATING PRACTICE FOR COLD FORMING
WITH BEND LINES PERPENDICULAR TO ROLLING DIRECTION
Thickness ofMaterial

Suggested Minimum Inside Radius

Up to 1⁄2" incl.
Over 1⁄2" to 1" incl.
Over 1" to 11⁄2" incl.
Over 11⁄2" to 2" incl.

11⁄2t
21⁄2t
31⁄2t
41⁄2t

MECHANICAL PROPERTIES
Yield point, min. Ksi

up to & incl. 8" thick 36
over 8" thick 32
58-80
20
23

Tensile strength, Ksi
Elongation in 8 in., min., %
Elongation in 2 in., min., %

CHEMICAL REQUIREMENTS
Thickness, in.All

Carbon, max, %
0.26
Manganese, %
...
Phosphorus, max, % 0.04
Sulfur, max, %
0.05
Silicon, %
...
Copper, min, % when 0.20
Mcopper steel is specified

To 3⁄4

Over 3⁄4
to 11⁄2
incl.

Over 11⁄2
to 21⁄2
incl.

Over 21⁄2
to 4
incl.

Over 4

0.25
0.25
0.26
0.27
0.29
... 0.80-1.20 0.80-1.20 0.85-1.20 0.85-1.20
0.04
0.04
0.04
0.04
0.04
0.05
0.05
0.05
0.050.05
0.40
0.40
0.15-0.40 0.15-0.40 0.15-0.40
0.20
0.20
0.20
0.20
0.20

4MPage 3

ASTM A 283
Specification for Low and Intermediate
Tensile Strength Carbon Steel Plate of Structural Quality

DISCUSSION
ASTM A 283 covers low and intermediate tensile strength carbon
steel plates for general manufacturing and constructional applications. This material is normally supplied in therimmed or semikilled types of steel and is particularly suitable for the economical
production of assemblies requiring a considerable amount of
forming. Variations in low temperature impact properties are great
and these steels are not recommended for those applications
requiring low temperature notch toughness.
CORROSION RESISTANCE
This material has the same atmospheric corrosion resistance...
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