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Durelloy is a well balanced, fine grained electric furnace alloy steel, delivered standard in the heat treated hardness of Rockwell C 28–32. Durelloy is produced for applications requiring high tensile strength, resistance to wear, shock, and fatigue. Each heat lot must pass rigid quality control procedures which assure consistent physical and chemical standards.
In the pre-heat treated condition, Durelloy is excellent for applications requiring high torque and torsional strains. The combined alloy blend of chrome, molybdenum,and manganese produces excellent physical properties, depth of heat treatment, resistance to many forms of corrosion, excellent toughness, and good ductility.
Carbon Grades | Chrome-Moly Grades | Nickel-Moly Grades | Nickel-Chrome Grades | Chrome-Nickel-Moly Grades |
---|---|---|---|---|
C10xx* C11xx C12xx |
41xx* | 46xx 48 xx |
31xx 33xx |
43xx* 47xx 81xx 86xx 87xx 88xx 93xx 98xx |
* xx indicates amount of Carbon content.
Alloy steel marketed under various trade names are included, but are too extensive for listing. Contact your Ameralloy representative or Central Sales Office at 847-967-0600 for assistance in clarification and comparison.
Durelloy pre-machined flats Thickness 1/2”–2”, width 2” to 24”, length 72”. Blanchard ground top and bottom TOL plus .020–.030
Durelloy special heat-treat
Durelloy annealed Every Durelloy size is available in the annealed condition, and can be further heat treated
Durelloy forgings Custom forging to your specifications
Custom machining and grinding
Rounds | Squares | Hexagons | Flats | Plates | ||||
---|---|---|---|---|---|---|---|---|
1/2 | 3-1/8 | 7-1/4 | 1-1/4 | 3/8 | 1/2 x 2 | 1-1/8 x 2-1/2 | x 3-1/2 | 3/8 x 96 x 120 |
5/8 | 3-1/4 | 7-1/2 | 1-1/2 | 1/2 | x 3 | x 4-1/2 | 2 x 4 | 1/2 x 96 x 120 |
3/4 | 3-3/8 | 7-3/4 | 1-3/4 | 5/8 | x 4 | 1-1/4 x 2 | x 4-1/2 | 3/4 x 96 x 120 |
7/8 | 3-1/2 | 8 | 2 | 3/4 | 5/8 x 3 | x 2-1/2 | x 5 | 1 x 96 x 120 |
1 | 3-5/8 | 8-1/4 | 2-1/4 | 7/8 | x 2-1/2 | x 3 | x 6 | 1-1/4 x 96 x 120 |
1-1/8 | 3-3/4 | 8-1/2 | 2-1/2 | 1 | x 3 | x 3-1/2 | x 8 | 1-1/2 x 96 x 120 |
1-1/4 | 4 | 8-3/4 | 2-3/4 | 1-1/8 | x 4 | x 4 | 2-1/2 x 3 | 2 x 96 x 120 |
1-3/8 | 4-1/8 | 9 | 3 | 1-1/4 | x 4-1/2 | x 4-1/2 | x 3-1/2 | 2-1/2 x 96 x 120 |
1-1/2 | 4-1/4 | 9-1/2 | 3-1/2 | 1-3/8 | 3/4 x 1 | x 5 | x 4 | 3 x 96 x 120 |
1-5/8 | 4-3/8 | 10 | 4 | 1-1/2 | x 2 | x 6 | x 4-1/2 | 3-1/2 x 96 x 144 |
1-3/4 | 4-1/2 | 10-1/2 | 4-1/2 | 1-5/8 | x 3 | x 8 | x 5 | 4 x 96 x 144 |
1-7/8 | 4-3/4 | 11 | 5 | 1-3/4 | x 4 | 1-1/2 x 2 | x 6 | 5 x 96 x 144 |
2 | 5 | 11-1/4 | 5-1/2 | 2 | 1 x 1-1/2 | x 2-1/2 | x 8 | 6 x 96 x 144 |
2-1/8 | 5-1/4 | 11-1/2 | 6 | 2-1/8 | x 2 | x 3 | 3 x 4 | 8 x 96 x 144 |
2-1/4 | 5-1/2 | 12 | 8 | 2-1/4 | x 2-1/2 | x 3-1/2 | x 5 | |
2-3/8 | 5-3/4 | 14 | 2-3/8 | x 3 | x 4 | x 6 | ||
2-1/2 | 6 | 15-1/2 | 2-1/2 | x 3-1/2 | x 4-1/2 | x 8 | ||
2-5/8 | 6-1/4 | 16 | 2-3/4 | x 4 | x 5 | 3-1/2 x 8 | ||
2-3/4 | 6-1/2 | 18 | 3 | x 4-1/2 | x 6 | 4 x 5 | ||
2-7/8 | 20 | 6-3/4 | 3-1/4 | x 5 | x 8 | x 6 | ||
3 | 7 | 24 | 3-1/2 | x 6 | 2 x 2-1/2 | x 8 | ||
x 3 |
Lengths: 18’-20’ or custom cut to size.
Tensile Strength PSI | Yield Point PSI | Elongated In 2” % | Reduction Of Area % | Brinell Hardness BHN | Charpy V-Notch FT-LB |
---|---|---|---|---|---|
155/172,000 | 140/155,000 | 21.0/18.0 | 62/54 | 312/330 | 60/25 |
Properties are typical over a wide range of cross-sectional dimensions. Refer to following charts.
Section Size Inches | Tempering Temperature °F/°C | Tensile Strength PSI | Yield Point |
Elongated In 2” % | Reduction Of Area % | Surface Hardness BHN | Charpy V-Notch FT-LB | Mid-Radius Hardness BHN |
---|---|---|---|---|---|---|---|---|
1 | AQ 800/427 1000/538 1200/649 |
– 246,500 198,250 166,500 |
– 234,000 189,500 154,750 |
– 12.5 18.5 20.5 |
– 48.5 58.0 60.8 |
698 480 412 302 |
– 13 22 54 |
698 480 412 302 |
2 | AQ 800/427 1000/538 1200/649 |
– 238,750 202,000 164,000 |
– 226,000 190,750 155,500 |
– 14.5 18.6 21.2 |
– 52.5 59.0 61.5 |
660 469 412 340 |
– 15 22 56 |
660 469 412 340 |
4 | AQ 800/427 1000/538 1200/649 |
– 222,000 196,750 162,250 |
– 208,500 184,500 154,000 |
– 16.0 19.0 21.5 |
– 54.0 60.5 64.0 |
586 442 410 336 |
– 20 28 58 |
586 440 402 332 |
6 | AQ 800/427 1000/538 1200/649 |
– 205,500 192,000 160,000 |
– 190,250 178,000 149,500 |
– 116.8 19.8 21.8 |
– 55.0 61.8 64.6 |
498 408 398 330 |
– 24 27 62 |
488 398 390 326 |
8 | AQ 800/427 1000/538 1200/649 |
– 198,750 190,500 154,500 |
– 183,500 172,500 146,250 |
– 18.2 20.5 22.0 |
– 56.2 62.5 65.5 |
412 396 388 322 |
– 24 28 68 |
396 390 380 316 |
Durelloy bar samples oil-quenched from 1550°F (843°C).
Section Size Inches | Tensile Strength PSI | Yield Point % | Elongated In 2” % | Reduction Of Area % | Brinell Hardness BHN | Charpy V-Notch FT-LB |
---|---|---|---|---|---|---|
1 | 214,500 | 176,000 | 15.3 | 53.7 | 402 | 13 |
2 | 208,750 | 172,500 | 15.7 | 54.2 | 394 | 14 |
4 | 198,000 | 165,750 | 16.5 | 55.1 | 376 | 16 |
6 | 184,500 | 151,250 | 17.2 | 56.0 | 358 | 18 |
8 | 168,000 | 138,500 | 17.8 | 56.4 | 332 | 20 |
1 | 116,250 | 84,500 | 28.5 | 68.2 | 210 | 81 |
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Heating At 50° Per Hour | Cooling At 50° Per Hour | |||
AC1 | AC3 | AR3 | AR1 | Ms |
1360°F | 1495°F | 1350°F | 1220°F | 525°F |
738°C | 813°C | 732°C | 660°C | 274°C |
Heat thoroughly to 2250°F (1232°C) Max. Reheat as often as necessary to finish forging operation, but do not work below 1550°F (816°C). May be air-cooled (normalized) or oil-quenched after forging. For maximum properties, tempering is recommended prior to cooling below 150°F (66°C). Refer to Metallurgical Data for resultant properties.
Heat to 1500°–1600°F (816°–871°C). Hold for 1 hour per inch of greatest thickness. Slow cool to 500°F (260°C). Air cool. Refer to Metallurgical Data for resultant properties.
Heat to 1550°–1650°F (843°–899°C). Soak thoroughly. Air cool. Refer to Metallurgical Data for resultant properties.
Hardness properties of .505” diameter test specimens,oil-quenched from 1550°F (843°C) and tempered as shown:
Tempering Temperature | Hardness | |
°F | °C | BHN |
300 | 149 | 612 |
500 | 260 | 548 |
700 | 371 | 498 |
900 | 482 | 439 |
1100 | 593 | 365 |
1300 | 704 | 289 |
Durelloy carburizing case depths (inches), when carburized and quenched immediately in agitated oil and tempered at 300°–400°F. Resultant surface hardness of 615/700 BHN:
Hours | 1550°F (843°C) | 1650°F(899°C) | 1750°F(954°C) | 1850°F(1010°C) |
---|---|---|---|---|
2 | .024 | .034 | .046 | .062 |
4 | .033 | .047 | .064 | .089 |
6 | .040 | 058 | .079 | .109 |
8 | .046 | .067 | .090 | .123 |
10 | .051 | .072 | .101 | .137 |
12 | .057 | .079 | .111 | .151 |
16 | .065 | .89 | .126 | .172 |
20 | .072 | 101 | .141 | .192 |
24 | .079 | .111 | .155 | .208 |
No special electrode needed. Standard low-hydrogen rods recommended for maximum strengths. Most popular AWS designations are E7016, 7018, 10016 and (10018–preferred).
Not sure what you are looking for? Contact Ameralloy Steel an ISO 9001 certified supplier that specializes in finding hard-to-find Stainless and Alloys. Along with our proprietary grades Amera-Braze, Durelloy, and Dura-Krome. Our knowledgeable sales team will help you find what you are looking for. With many shapes, sizes, and material grades available, we can help you find what you are looking for. The most common items stocked are Tube, Pipe, Sheet, Plate, Hex bar, Square bar, Round bar, Threaded bar, Pump Shaft, and Millimeter sizes. We offer added fabrication services. Contact us now for the current price and delivery.