High Strength Bars
KROMITE® #3 - Hot Rolled, Heat Treated, High Strength Alloy
TYPICAL MECHANICAL PROPERTIES*
*Based on 1/2" Diameter Test Specimen
(Centrex® HR Past Protected Trade Name of Ludlow Steel Co.)
Clean Steel Technology - a manufacturing process that delivers consistent steel through control and refinement of the melt.
Proprietary Chemistry a chemistry that offers excellent cleanliness and a well defined grain structure to provide fatigue resistance when material is in service.
Electric Furnace Melt offers greater quality control at the mill including refinement of chemistry, grain size and shape.
Vacuum Degassed eliminates many impurities found in standard commercial grade alloys. The result is a better, cleaner, and stronger product that extends service.
Heat Treated eliminates excessive cost in heat treatment. Our material is thermally treated (as delivered) to a hardness of 269/341 BHN.
Machine Straightened eliminates excessive bow and distortion. Our standard straightness is 1/8" in any 5 feet, better than twice the industry standard (for rounds and squares only).
Stress Relieved reduces the likelihood of material "walking" or moving during machining.
Semi Finished and Finished Products
Kromite #3 Econo-Finish furnished ground top and bottom to (+.015"/+.030") oversize; sides saw cut to (+1/8"). Available up to 12 Ft lengths; see page 53 for further details.
Kromite #3 Flat Ground furnished precision ground to (+.001"/-.000") on thickness and (+.005"/-.000") on all sides with lengths (+1/4") at 18" and 36" available; see page 61 for details.
If currently using 1018, 1045, 4130, 4140, 4150, 4145, or 4340, consider Kromite #3 as an upgrade to those commercial grade steels.
10/12 Foot Random Lengths
20/24 Foot Random Lengths
Hot Roll Annealed Bar Stock, Brake Die Stock and Custom Forgings are all available upon request.
Note: Caution should be exercised when cold working any hardened alloy material. Use equipment of sufficient capacity that is in good condition. Utilize machine operators that are experienced in working with hardened alloys and wear appropriate safety gear.
Kromite #3 and Mirraloy TGP are heat treated alloy materials both with an approximate hardness of Rc 30. Machinability rating is approx. 60%, depending on actual hardness.
* Typically, 10" Rounds and above are furnished as Rough Turned Oversized, to finish to the nominal size, & have an approximate 500 RMS. All squares over 4-1/2" are produced from plate; standard plate tolerances apply. Certain flats may be furnished from cut plate; standard plate tolerances apply.
- Line Shafts
- Drive Shafts
- Drag Line Parts
- Feed Screws
- Lead Screws
- Mine Car Axles
- Piston Rods
- Tool Shanks
- Tie Rods
- Textile Parts
- Wear Strips
- Worm Gears
- Wrist Pins
View our online catalog for PDF brochures on these and other products.