What is NM550 wear resistant steel?
NM550 steel is one kind of Chinese wear/abrasion resistant steel plates. It was hot rolled and then the plates were heat-treated by direct quenching and tempering and reheat quenching and tempering techniques, respectively. With high mechanical strength, NM550 is 3 times to 5 times more than common low-alloy steel plates which can significantly improve surface hardness, usually achieved 360 ~ 450HB.
NM450 Abrasion Resistant Steel Plate Parameter:
NM550 AR plate steel chemical composition：
| Steel Grade | C | Si | Mn | P | S | Cr | Mo | B | N | H | Ceq |
| NM550 | ≤0.35 | ≤0.40 | ≤1.20 | ≤0.010 | ≤0.002 | ≤1.00 | ≤0.30 | ≤0.002 | ≤0.0045 | ≤0.0002 | ≤0.72 |
NM550 abrasion steel mechanical property：
| Tensile strength (≥Mpa) | -20℃ impacting test
absorbed energy (Longi.J) |
Elongation in ≥,% | HBW
Min |
| – | – | 50mm | 530 |
Features of NM550 wear-resistant steel plate
- High hardness: The hardness of NM550 wear-resistant steel is as high as 550HBW, with excellent wear resistance, and can effectively resist various wear and scratches.
- Excellent wear resistance: NM550 wear plate steel adopts high-strength alloy material, has extremely high wear resistance, can withstand high-intensity impact and heavy load, and effectively prolongs service life.
- High strength: NM550 wear resistant plate has high yield strength and tensile strength, can withstand large internal and external forces, and ensure the stability and safety of the structure.
- Low-temperature impact toughness: NM550 abrasion resistant steel plate can still maintain good impact toughness in low-temperature environment, is not easy to break, and is suitable for various harsh working conditions.
NM550 Abrasion Resistant Steel Plate Dimensions Sizes:
| Size in In. | Weight per Square Foot. in Lbs. |
| 3/16 x 48 | 7.660 |
| 3/16 x 36 | 7.660 |
| 3/16 x 60 | 7.660 |
| 3/16 x 54 | 7.660 |
| 3/16 x 84 | 7.660 |
| 3/16 x 96 | 7.660 |
| 3/16 x 72 | 7.660 |
| 3/16 x 120 | 7.660 |
| 1/4 x 48 | 10.210 |
| 1/4 x 60 | 10.210 |
| 1/4 x 36 | 10.210 |
| 1/4 x 84 | 10.210 |
| 1/4 x 96 | 10.210 |
| 1/4 x 72 | 10.210 |
| 5/16 x 36 | 12.760 |
| 1/4 x 120 | 10.210 |
| 5/16 x 120 | 12.760 |
| 5/16 x 60 | 12.760 |
| 5/16 x 48 | 12.760 |
| 5/16 x 96 | 12.760 |
| 5/16 x 72 | 12.760 |
| 3/8 x 36 | 15.320 |
| 3/8 x 60 | 15.320 |
| 3/8 x 72 | 15.320 |
| 3/8 x 48 | 15.320 |
| 3/8 x 84 | 15.320 |
| 3/8 x 120 | 15.320 |
| 7/16 x 84 | 17.870 |
| 3/8 x 96 | 15.320 |
| 1/2 x 48 | 20.420 |
| 1/2 x 60 | 20.420 |
| 3/16 x 96 | 17.870 |
| 1/2 x 84 | 20.420 |
| 1/2 x 96 | 20.420 |
| 1/2 x 72 | 20.420 |
| 1/2 x 120 | 20.420 |
Main uses of NM550 wear-resistant steel plates:
1) Engineering machinery and equipment: bucket plates, side shovels, bucket bottom plates, blades, and backhoe plates of mining dump trucks, loaders, bulldozers, and excavators.
2) Loading and unloading machinery and equipment: unloading mill chain plates, bucket liners, grab blade plates, medium-sized automatic dumper bucket plates, and stacker wheel plates.
3) Engineering machinery and equipment: cement bulldozer tooth plates, concrete mixer liners, mixing floor liners, and dust collector liners
4) Metallurgical machinery and equipment: iron ore sintering conveyor elbows, iron ore sintering machine liners, and scraper conveyor liners
5) Mining machinery and equipment: ore and stone crusher liners and blades.
6) Other machinery and equipment: sand mill barrels, blades, and various types of port machinery wear-resistant parts
7) Thermal power equipment: coal mill liners, coal hoppers, coal distribution pipes, coal distribution grids, coal unloading equipment liners, and bulk material removers.
8) Shot blasting machinery and equipment: Shot blasting machine lining.
