NM450, NM500, and NM550 are grades of Chinese (GB/T 24186 standard) wear-resistant (or abrasion-resistant, AR) steel plates, named for their approximate Brinell hardness (HBW) of 450, 500, and 550, respectively, offering increasing resistance to abrasion and impact for heavy-duty applications like mining, construction (truck beds, buckets, liners, chutes) and material handling, balancing hardness with good weldability and toughness.
NM450 Steel Plates
NM450 is a Chinese standard, high-strength, wear-resistant steel plate known for its excellent abrasion resistance, hardness (around 450 HBW), and good toughness, used in heavy industries like mining and construction for components like bucket liners, chutes, and truck beds to extend equipment life and reduce downtime, often compared to Hardox 450 but typically more cost-effective.
NM450 steel plates are mainly used for charging cranes, excavators, dumpers, conveyors, trucks, breaking and cutting tools, waste disposal, and recovery equipment. Compared to the carbon steel plate, NM450 wear-resistant steel plate have high wear resistance and good impact performance it can be cut, bending, welded, etc. We conduct various tests like IGC test, positive material test, mechanical test, hardness test, chemical test, pitting resistance test, etc. to ensure our products are defect free and suitable for use in various environments. Additionally, we also provide third parties inspection on NM450 steel plates for 100% quality assurance.
C Specification :
Thickness : 1.2mm-300mm
Width : 50mm-4020mm
Length : 50mm-18000mm
Production : Hot-Rolled (HR)
Standard : JIS G4051 GB711 YB/T107 ASTM
Hardness : Soft, Hard, Half Hard, Quarter Hard, Spring Hard etc.
Material : NM 450, BHN 450 Steel Plate, NM450 Abrasion Resistant Steel Plates, NM450 Wear Resistant Plates
Chemical Composition Of NM 450 Plates
| NM450 Chemical Compositiom | |||||||||||
| Plate | C | Si | Mn | P | S | Cr | Ni | Mo | B | CEV | CET |
| thickness mm | max % | max % | max % | max % | max % | max % | max % | max % | max % | typv | typv |
| 3-(8) | 0.19 | 0.7 | 1.6 | 0.025 | 0.01 | 0.25 | 0.25 | 0.25 | 0.004 | 0.41 | 0.30 |
| 8-20 | 0.21 | 0.7 | 1.6 | 0.025 | 0.01 | 0.50 | 0.25 | 0.25 | 0.004 | 0.47 | 0.34 |
| (20)-40 | 0.23 | 0.7 | 1.6 | 0.025 | 0.01 | 1.00 | 0.25 | 0.25 | 0.004 | 0.57 | 0.37 |
| (40)-50 | 0.23 | 0.7 | 1.6 | 0.025 | 0.01 | 1.40 | 0.25 | 0.60 | 0.004 | 0.59 | 0.36 |
| (50)-80 | 0.26 | 0.7 | 1.6 | 0.025 | 0.01 | 1.40 | 1.00 | 0.60 | 0.004 | 0.72 | 0.41 |
Mechanical Properties for NM 450 High Tensile Plate
| Mechanical properties of NM 450 | |||||
| Thickness/mm | ReL /MPa | Rm /MPa | A/% | Hardness/ HBW10/3000 | Impact -20℃ /J |
| 8 | 1250 | 1460 | 16 | 445 | 40 |
| 12 | 1290 | 1470 | 17 | 462 | 43 |
| 20 | 1370 | 1450 | 17 | 473 | 42 |
| 25 | 1230 | 1480 | 16.5 | 465 | 43 |
NM 450 Plate Processing
The majority of normal processing can be performed on NM 450 plate
Electric Furnace Steelmaking
LF Refining
VD Vacuum Treatment
Continuous casting and rolling
Accelerated Cooling
Thermal Treatment
Ware-house-in Inspection
NM500 High strength abrasion resistant steel plate
The NM500 plate's wear-resistant layer is mostly constructed of a chromium alloy, with manganese, molybdenum, niobium, nickel, and other alloys added. It has a high hardness and great wear resistance and is created with exceptional toughness by the surface welding process to compound a particular thickness of the wear-resistant layer.
NM500 steel has excellent strength, toughness, minimum yield strength, and temperature impact strength. Because of its unrivaled workability, this grade steel may be utilized to manufacture lifting and transportation equipment. Furthermore, these steel plates can withstand high stress and perform under large burdens, allowing for cost savings. NM500 wear-resistant steel is extensively used in heavy equipment, mining machinery, coal, cement, electricity, glass, mining, building materials, metallurgical machinery, abrasives, bearings, and other industries.
Each finished product is subjected to a stringent examination by an experienced quality inspector, who ensures the volume/weight of each product. We give all essential documentation like Product invoices, testing certificates, grade specifications, raw material test certifications, etc.
NM500 Steel Plates Specification :
Thickness : 1.2mm-300mm
Width : 50mm-4020mm
Length : 50mm-18000mm
Production : Hot-Rolled (HR)
Standard : JIS G4051 GB711 YB/T107 ASTM
Hardness : Soft, Hard, Half Hard, Quarter Hard, Spring Hard etc.
Material : NM 500, BHN 500 Steel Plate, NM500 Abrasion Resistant Steel Plates, NM500 Wear Resistant Plates
Chemical Composition Of NM 500 Plates
| NM500 Chemical Compositiom | |||||||||||
| Plate | C | Si | Mn | P | S | Cr | Ni | Mo | B | CEV | CET |
| thickness mm | max % | max % | max % | max % | max % | max % | max % | max % | max % | typv | typv |
| 4-13 | 0.27 | 0.7 | 1.6 | 0.025 | 0.01 | 1.00 | 0.25 | 0.25 | 0.004 | 0.49 | 0.34 |
| (13)-32 | 0.29 | 0.7 | 1.6 | 0.025 | 0.01 | 1.00 | 0.50 | 0.30 | 0.004 | 0.62 | 0.41 |
| (32)-40 | 0.29 | 0.7 | 1.6 | 0.025 | 0.01 | 1.00 | 1.00 | 0.60 | 0.004 | 0.64 | 0.43 |
| (40)-80 | 0.30 | 0.7 | 1.6 | 0.025 | 0.01 | 1.50 | 1.50 | 0.60 | 0.004 | 0.74 | 0.46 |
Mechanical Properties for NM 500 High Tensile Plate
| Mechanical properties of NM 500 | |||||
| Grade | Mechanical Property | Charpy V Impact Test | |||
| NM500 | HBW Thickness/Mpa | Elongation | Degree | longitudinal | |
| 4-32MM | 470-530 | Min % | -40 | J | |
| (32)-80 | 450-540 | 10 | 40 | ||
NM 500 Plate Processing
The majority of normal processing can be performed on NM 500 plate
Electric Furnace Steelmaking
LF Refining
VD Vacuum Treatment
Continuous casting and rolling
Accelerated Cooling
Thermal Treatment
Ware-house-in Inspection
NM550 hot rolled wear resistant steel plate
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.
NM550 Steel Plate (NM550 Plate) Description
1. High hardness: The hardness of NM550 wear-resistant plate reaches above 550HB, which can effectively resist various wear and impact.
2. High strength: This steel plate has excellent strength and can withstand high pressure and heavy loads.
3. Good wear resistance: NM550 wear-resistant steel plate performs well under harsh working conditions and can be used for a long time without damage.
4. Good weldability: This steel plate can be connected and installed using conventional welding methods.
5. Good processing performance: NM550 wear-resistant steel plate is easy to cut, punch, and bend, and can be processed according to needs.
Chemical Composition
| Element | Content (%) |
|---|---|
| Carbon (C) | ≤ 0.27 |
| Silicon (Si) | ≤ 0.70 |
| Manganese (Mn) | ≤ 1.60 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.010 |
| Chromium (Cr) | 0.70 - 1.00 |
| Nickel (Ni) | ≤ 1.50 |
| Molybdenum (Mo) | ≤ 0.60 |
| Boron (B) | 0.0005 - 0.0060 |
| Titanium (Ti) | ≤ 0.15 |
| Aluminum (Al) | ≤ 0.10 |
| Vanadium (V) | ≤ 0.20 |
Mechanical Properties
| Property | Value |
|---|---|
| Hardness (HBW) | 500 - 550 |
| Tensile Strength (Rm) | 1400 - 1700 MPa |
| Yield Strength (Rp0.2) | ≥ 1100 MPa |
| Elongation (A5) | ≥ 8% |
| Impact Energy (-40°C) | ≥ 30 J |
| Impact Energy (-20°C) | ≥ 35 J |
| Fatigue Limit (10^7 cycles) | 450 MPa |
| Fracture Toughness (KIC) | 45 MPa·m^0.5 |
| Young's Modulus | 210 GPa |
| Poisson's Ratio | 0.30 |
| Shear Modulus | 81 GPa |
Application
The series of NM wear-resistant steel combined the properties including high strength, high hardness, high wear resistant, weldable, bendable and mainly applied in:
Edge of loaders in loader industry
Wear-resistant lining plate in crusher industry.
Slat type conveyer in colliery mechanical industry.
Lining plate of coal pulverizer in power industry.
Lining plate of hopper for heavy handling truck.
What is NM500 steel?
NM500 is a wear-resistant steel known for its high hardness and toughness. The "NM" stands for "wear-resistant" and the "500" indicates its Brinell hardness. Originating in China, NM500 is used in industries requiring extreme abrasion resistance. It is similar to ASTM A514 steel.
What is the difference between Hardox 500 and NM500?
NM500 exhibits a hardness that typically fluctuates between 470-540 HBW, slightly edging out Hardox 500, which generally hovers around 470-530 HBW. This hardness is a key indicator of their prowess in withstanding the effects of abrasive wear and impact.
What is the difference between AR500 and NM500?
AR500: Higher carbon (C: ~0.38–0.45%), chromium (Cr: ~1.5%), and boron (B: 0.0005–0.006%) for enhanced hardness and corrosion resistance . NM500: Lower carbon (C: ≤0.38%), added nickel (Ni: ≤1.0%) and molybdenum (Mo: ≤0.65%) for balanced weldability and toughness
What's stronger than AR500?
SR500+ is much harder than AR500 meaning it pits less and has more impact resistance than AR550 meaning it's less prone to cracking than AR steels at a similar hardness.
| Other steel plate by GNEE | ||||
| Name | Material | Specification (mm) | Tons | Remark |
| Clad steel plate | P265GH+410,S355JR+410,A516Gr70+316, A537CL1+304L,Q235B+304L,Q345B+304, A516Gr70(NACE)+410,A537CL1+904L, A537CL1+316L,A516Gr70+304L,A537CL1+304 ,A516Gr70+410,A516Gr70+904L |
2-300mm(Based plate),1-50mm(Composited plate) | / | UT, AR, TMCP.Normalized, Quenched and Tempered,Z Direction Test, Charpy V-Notch impact TestThe Third Party Test , Coated or Shot Blasting and Painting. |
| Low Alloy | Q345A, Q345B, Q345C, Q345D, Q345E, Q390, Q420, Q460C, ST52-3, S355J2+N, SS400, SA302GrC, S275NL, 35CrMo | 6 - 350 | 5788.56 | Normalizing, tempered ,controlled rolling, hot rolling , Hot rolling,1st inspection, 2nd inspection, 3rd inspection |
| Pressure Vessel Plate | A204 Grade B,A515 Grade 70,A537 Class 1,SA387 Grade 11 Class 1,P265GH,S537 Class 2,P355Q,P275N,P355N,P690Q,Q345R, | 3 - 300 | 8650 | Normalizing, tempered ,controlled rolling, hot rolling , Hot rolling,1st inspection, 2nd inspection, 3rd inspection |
| High-Strength Plate | A514 Grade F, A572 Grade 50, A588 Grade A, S355JR, S690Q, SS400, S690QL, Q345B, Q345E | 8 - 120 | 3086.352 | Quenched and tempered |
| Wear-Resistant Plate | NM360, NM400, NM450, NM500 | 6 - 150 | 3866.297 | Quenched and tempered |
| Ship Plate | ABS AH32,ABS DH32,ABS EH32,ABS FH36,ASTM A131 A, ASTM A131 EH32,ASTM A131 AH36,CCS A,CCS AH32,LR AH32, DNV A36,BV AH32 |
8 - 200 | 2853.621 | Hot rolling, normalized ,hot rolling controlled rolling, quenched and tempered + toughness and brittleness |
