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Chemtech has a distribution center in Hamilton, Ontario, and is proud to provide an exceptional quality of steel that meets the CSA, Canadian Standards Association, and offers certifications for structural steel such as products like CSA G40.21 steel plates in different grades such as: 44W, 50W and 50A.
Mechanical Properties 44W/300W:
Tensile: 65 to 85 ksi
Yield: 44 ksi min
Elongation: 20% min in 8” 23% min in 2”
CAT 1 (32°F): 15 ft/lbs
CAT 2 (0°F): 15 ft/lbs
CAT 3 (-20°F): 15 ft/lbs
CAT 4 (-50°F): 15 ft/lbs
CSA G40.21 covers the chemical and mechanical requirements for structural quality steel shapes, plates, and bars for use in general construction and engineering purposes.
G40.21 Types
Type W | Weldable Steel |
---|---|
Type WT | Weldable Notch Tough Steel (low temperature) |
Type R | Atmospheric Corrosion Resistant Steel |
Type A | Atmospheric Corrosion Resistant Weldable Steel |
Type AT | Atmospheric Corrosion Resistant Weldable Notch Tough Steel |
Type Q | Quenched and Tempered Low Alloy Steel Plate Steel |
Type QT | Quenched and Tempered Low Alloy Notch Tough Steel Plate |
G40.21 Grades, Types and Strength Levels
Type | 38 | 44 | 50 | 55* | 60 | 70 | 80 | 100 |
---|---|---|---|---|---|---|---|---|
W | 38W | 44W | 50W | 55W | 60W | 70W | 80W | – |
WT | 38WT | 44WT | 50WT | 55WT | 60WT | 70WT | 80WT | – |
R | 50R | |||||||
A | 50A | 60A | 70A | 80A | ||||
AT | 50AT | 60AT | 70AT | 80AT | ||||
Q | 100Q | |||||||
QT | 100QT | |||||||
*Grade 55W is available only as hollow sections, angles and bars. 55WT as hollow sections only |
G40.21 Imperial / Metric Conversion
Imperial, ksi | Metric, MPa |
---|---|
38 | 260 |
44 | 300 |
50 | 350 |
55 | 380 |
60 | 400 |
70 | 480 |
80 | 550 |
100 | 700 |
G40.21 Mechanical Requirements for Plates, Bars, and Shapes
Grade | Tensile, ksi | Yield, ksi min, up to 2-1/2” | Yield, ksi min, above 2-1/2” to 4” | Elongation, % min, Longitudinal in 8” |
---|---|---|---|---|
38W | 60-85 | 38 | 36 | 20 |
44W | 65-90 | 44 | 40 | 20 |
50W | 65-95 | 50 | 46 | 19 |
55W | 70-95 | 55 | – | 18 |
60W | 75-100 | 60 | – | 16 |
70W | 85-115 | 70 | – | 15 |
80W | 90-125 | 80 | – | 13 |
38WT | 60-85 | 38 | 36 | 20 |
44WT | 65-90 | 44 | 40 | 20 |
50WT | 70-95 | 50 | 46 | 19 |
60WT | 75-100 | 60 | – | 18 |
70WT | 85-115 | 70 | – | 15 |
80WT | 90-125 | 80 | – | 13 |
50R | 70-95 | 50 | – | 19 |
50A | 70-95 | 50 | 50 | 19 |
60A | 75-100 | 60 | – | 18 |
70A | 85-115 | 70 | – | 15 |
80A | 90-125 | 80 | – | 13 |
50AT | 70-95 | 50 | 50 | 19 |
60AT | 75-100 | 60 | – | 18 |
70AT | 85-115 | 70 | – | 15 |
80AT | 90-125 | 80 | – | 13 |
100Q | 110-130 | 100 | 90 | 18 in 2” |
100QT | 110-130 | 100 | 90 | 18 in 2” |
The above table has been abridged for clarity and relevance. The complete table can be found in the CSA standard |
G40.21 Chemical Requirements
Grade | Carbonmax | Manganese | Phosphorous | Sulfur max | Silicon | Chromium | Nickel | Copper |
---|---|---|---|---|---|---|---|---|
38W | 0.20 | 0.50-1.50 | 0.04 max | 0.05 | 0.40 max | – | – | – |
44W | 0.22 | 0.50-1.50 | 0.04 max | 0.05 | 0.40 max | – | – | – |
50W | 0.23 | 0.50-1.50 | 0.04 max | 0.05 | 0.40 max | – | – | – |
55W | 0.23 | 0.50-1.50 | 0.04 max | 0.05 | 0.40 max | – | – | – |
60W | 0.23 | 0.50-1.50 | 0.04 max | 0.05 | 0.40 max | – | – | – |
70W | 0.26 | 0.50-1.50 | 0.04 max | 0.05 | 0.40 max | – | – | – |
80W | 0.15 | 1.75 max | 0.04 max | 0.05 | 0.40 max | – | – | – |
38WT | 0.20 | 0.80-1.50 | 0.03 max | 0.04 | 0.15-0.40 | – | – | – |
44WT | 0.22 | 0.80-1.50 | 0.03 max | 0.04 | 0.15-0.40 | – | – | – |
50WT | 0.22 | 0.80-1.50 | 0.03 max | 0.04 | 0.15-0.40 | – | – | – |
60WT | 0.22 | 0.80-1.50 | 0.03 max | 0.04 | 0.15-0.40 | – | – | – |
70WT | 0.26 | 0.80-1.50 | 0.03 max | 0.04 | 0.15-0.40 | – | – | – |
80WT | 0.15 | 1.75 max | 0.03 max | 0.04 | 0.15-0.40 | – | – | – |
50R | 0.16 | 0.75 max | 0.05-0.15 | 0.04 | 0.75 max | 0.30-1.25 | 0.90 max | 0.20-0.60 |
50A | 0.20 | 0.75-1.35 | 0.03 max | 0.04 | 0.15-0.50 | 0.70 max | 0.90 max | 0.20-0.60 |
60A | 0.20 | 0.75-1.35 | 0.03 max | 0.04 | 0.15-0.50 | 0.70 max | 0.90 max | 0.20-0.60 |
70A | 0.20 | 1.00-1.60 | 0.025 max | 0.035 | 0.15-0.50 | 0.70 max | 0.25-0.50 | 0.20-0.60 |
80A | 0.15 | 1.75 max | 0.025 max | 0.035 | 0.15-0.50 | 0.70 max | 0.25-0.50 | 0.20-0.60 |
50AT | 0.20 | 0.75-1.35 | 0.03 max | 0.04 | 0.15-0.50 | 0.70 max | 0.90 max | 0.20-0.60 |
60AT | 0.20 | 0.75-1.35 | 0.03 max | 0.04 | 0.15-0.50 | 0.70 max | 0.90 max | 0.20-0.60 |
70AT | 0.20 | 1.00-1.60 | 0.025 max | 0.035 | 0.15-0.50 | 0.70 max | 0.25-0.50 | 0.20-0.60 |
80AT | 0.15 | 1.75 max | 0.025 max | 0.035 | 0.15-0.40 | 0.70 max | 0.25-0.50 | 0.20-0.60 |
100Q | 0.20 | 1.50 max | 0.03 max | 0.04 | 0.15-0.40 | – | – | – |
100QT | 0.20 | 1.50 max | 0.03 max | 0.04 | 0.15-0.40 | – | – | – |
In addition, grades 100Q and 100QT shall have a Boron composition of 0.0005-0.005% The above table has been abridged for clarity and relevance. The complete table can be found in the CSA standard |
G40.21 Charpy Impact Testing
Grade | Minimum Absorbed Energy, Categories 1-4, in ft-lb |
---|---|
38WT | 15 |
44WT | 15 |
50WT | 20 |
55WT | 20 |
60WT | 20 |
70WT | 20 |
80WT | 20 |
50AT | 20 |
60AT | 20 |
70AT | 20 |
80AT | 20 |
100QT | 25 |
Absorbed energy for Category 5 shall be specified by the purchaser |
Category | Test Temperature, °F |
---|---|
1 | 32 |
2 | 0 |
3 | -20 |
4 | -50 |
5 | To be specified by purchaser |
Commentary on ASTM Equivalents
The most common merchant structural grade of CSA G40.21 is 44W(300W). Most steel mills in the US manufacture their merchant bars (rounds, flats) to meet both this grade and ASTM A36 in order to satisfy users on both sides of the border. Becoming more common in recent years is structural steel per 50W. ASTM A572/A529 grade 50 will typically satisfy these requirements. All of Chemtech A36 rounds bar will cross-certify to 44W and our F1554G55 round bar will meet the requirements of grade 50W. There may be some other cross certification available on a case by case basis. Ask your Chemtech salesperson for more information.
We are Stocking Following Origin (Make) Plates
Voestalpine (Austria) | JFE Steel Corporation (Japan) |
POSCO (South Korea) | SSAB Alabama Inc. (USA) |
JINDAL STEEL AND POWER LTD (USA) | Azovstal Iron & Steel Works (Ukraine) |
Nippon Steel & Sumitomo Metal Corporation (Japan) | Arcelor Mittal (USA) |
Kobe Steel, Ltd. (Japan) | Nucor Steel (USA) |
ESSAR STEEL INDIA LIMITED (India) | JINDAL STEEL AND POWER LTD (India) |
TATA Steel (UK) | SAIL (INDIA) |
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