ASTM A449 Hex Cap Screws Hex Bolts
Standard: ASME B18.2.1 unless otherwise specified
(Various types of configuration are also available)
Thread Size: 1/4”-3” with various lengths
Grade: ASTM A449 Type-1
Finish: Black Oxide, Zinc Plated, Dacromet, Hot Dip Galvanized, PTFE and so on
Packing: Bulk about 25 kgs each carton, 36 cartons each pallet
Advantage: High Quality and Strict Quality Control, Competitive Price,Timely Delivery; Technical Support, Supply Test Reports
Please feel free to contact us for more details.
ASTM A449
ASTM A449 covers headed bolts, rods, and anchor bolts in diameters ranging from 1/4″ through 3″ inclusive. It is a medium strength bolt manufactured from a medium carbon or alloy steel that develops its mechanical values through a heat treating process. It is intended for general engineering applications.
ASTM A449 is virtually identical in chemistry and strength to ASTM A325 and SAE J429 grade 5. However, A449 is more flexible in the sense that it covers a larger diameter range and is not restricted by a specific configuration.
| TYPE 1 | Plain carbon steel, carbon boron steel, alloy steel, or alloy boron steel. |
|---|---|
| TYPE 2 | Withdrawn 2003 |
| TYPE 3 | Weathering steel. |
| Size | Tensile, ksi | Yield, ksi | Elong. %, min | RA %, min |
|---|---|---|---|---|
| 1⁄4 - 1 | 120 min | 92 min | 14 | 35 |
| 11⁄8 - 11⁄2 | 105 min | 81 min | 14 | 35 |
| 15⁄8 - 3 | 90 min | 58 min | 14 | 35 |
| Type 1 Bolts | ||||
|---|---|---|---|---|
| Element | Carbon Steel | Carbon Boron Steel | Alloy Steel | Alloy Boron Steel |
| Carbon | 0.30 - 0.52% | 0.30 - 0.52% | 0.30 - 0.52% | 0.30 - 0.52% |
| Manganese, min | 0.60% | 0.60% | 0.60% | 0.60% |
| Phosphorus, max | 0.040% | 0.040% | 0.035% | 0.035% |
| Sulfur, max | 0.050% | 0.050% | 0.040% | 0.040% |
| Silicon | 0.15-0.30% | 0.10 - 0.30% | 0.15 - 0.35% | 0.15 - 0.35% |
| Boron | 0.0005 - 0.003% | 0.0005 - 0.003% | ||
| Alloying Elements | * | * | ||
| * Steel, as defined by the American Iron and Steel Institute, shall be considered to be alloy when the maximum range given for the content of alloying elements exceeds one of more of the following limits: Manganese, 1.65%, silicon, 0.60%, copper, 0.60%, or in which a definite range or a minimum quantity of any of the following elements is specified or required within the limits of the recognized field of constructional alloy steels: aluminum, chromium up to 3.99%, cobalt, columbium, molybdenum, nickel, titanium, tungsten, vanadium, zirconium or any other alloying elements added to obtain a desired alloying effect. | ||||
| Type 3 Bolts, Class * | ||||||
|---|---|---|---|---|---|---|
| Element | A | B | C | D | E | F |
| Carbon | 0.33 - 0.40% | 0.38 - 0.48% | 0.15 - 0.25% | 0.15 - 0.25% | 0.20 - 0.25% | 0.20 - 0.25% |
| Manganese | 0.90 - 1.20% | 0.70 - 0.90% | 0.80 - 1.35% | 0.40 - 1.20% | 0.60 - 1.00% | 0.90 - 1.20% |
| Phosphorus | 0.035% max | 0.06 - 0.12% | 0.035% max | 0.035% max | 0.035% | 0.035% |
| Sulfur, max | 0.040% | 0.040% | 0.040% | 0.040% | 0.040% | 0.040% |
| Silicon | 0.15 - 0.35% | 0.30 - 0.50% | 0.15 - 0.35% | 0.25 - 0.50% | 0.15 - 0.35% | 0.15 - 0.35% |
| Copper | 0.25 - 0.45% | 0.20 - 0.40% | 0.20 - 0.50% | 0.30 - 0.50% | 0.30 - 0.60% | 0.20 - 0.40% |
| Nickel | 0.25 - 0.45% | 0.50 - 0.80% | 0.25 - 0.50% | 0.50 - 0.80% | 0.30 - 0.60% | 0.20 - 0.40% |
| Chromium | 0.45 - 0.65% | 0.50 - 0.75% | 0.30 - 0.50% | 0.50 - 1.00% | 0.60 - 0.90% | 0.45 - 0.65% |
| Vanadium | 0.020% min | |||||
| Molybdenum | 0.06% max | 0.10% max | ||||
| Titanium | 0.05% max | |||||
| * Selection of a class shall be at the option of the manufacturer | ||||||
| Nuts | Washers | |||
|---|---|---|---|---|
| Plain | Galvanized | |||
| 1/4 - 1-1/2 | 1-5/8 - 3 | 1/4 - 3 | ||
| A563B Hex | A563A Heavy Hex | A563DH Heavy Hex | F436 | |
| Note: Nuts of other grades having proof load stresses greater than the specified grade are suitable. The ASTM A563 Nut Compatibility Chart has a complete list of specifications. | ||||
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I programmed my robot to weld a 2G pipe test. There are still some problems I need to work out to make it more efficient, but it put down a good weld that passed.