NM400 Wear Resistant Plate - Knowledge

NM400 Wear Resistant Plate PDF

NM400 Steel: High-quality tempered wear-resistant steel--An Wear Resistant Plate with 400 HB

NM400 steel is a high-strength, wear-resistant steel known for its superior durability and toughness. NM400 is a Chinese GB standard steel grade.‌NM400‌ is primarily used for wear protection of equipment in metallurgy, coal mining, cement production, and power generation industries. Its Brinell hardness is approximately 400HBW. The wear-resistant layer contains 4–5% carbon, 25–30% chromium, with Cr₇C₃ carbide volume fraction exceeding 50%. Macro hardness reaches HRC56–62, and wear resistance is 20–25 times higher than mild steel.

This steel plate combines wear resistance and impact resistance, supports cutting, welding, bolting, and deep processing (e.g., stamping, bending). It is suitable for thermal power equipment liners, mine crusher liners, and engineering machinery buckets. Product thickness ranges from 6-60mm. Standard models include NM360 to NM500 series. Theoretical weight calculation applies to 10mm specifications. Minimum order quantity is 1 ton, with quality certificates provided.

Supply Range of NM400 Steel Plate and Sheet

NM400 Wear Resistant Plate: thickness 3mm ~ 120mm x 1500~2300mm width x L

Black Surface: Black surface

Condition: QT (prehard condition)

DIN : XAR300, XAR400, XAR450, XAR500, XAR600, X120Mn12; 1.3401, etc...
SSAB : WELDOX700, WELDOX900, WELDOX960, etc.
NF : FORA400, FORA500; Creusabro4800, Creusabro8000, etc.
EN : QUARD400, QUARD450, QUARD500; RAEX320, RAEX400, RAEX500, etc.
JIS : JFE-EH360, JFE-EH400, JFE-EH500; WEL-HARD400, WEL-HARD500,etc.
GB : NM360, NM400, NM450, NM500, NM550, NM600, etc.

Equivalent of NM400 Plate :
GBT 24186：NM400
JFE：JFE-EH400
SUMITOMO：K400
DILLIDUR：400V
Nippon (Japan)：Abrex400
AM/NS (india)：Rockstar400
Jindal (india)：Rockhard400

High Strength Wear Resistant Steel Plate

Relevant NM400 Specification and NM400 Steel Equivalent Steel Grades

GBT 24186	JFE	SUMITOMO	DILLIDUR	SSAB
NM400	JFE-EH400	K400	400V	Hardox400

NM400 Chemical Composition

Grade	C	Si	Mn	P	S	Cr	Ni	Mo	Ti	B	Als
NM400	≤0.30	≤0.70	≤1.60	≤0.025	≤0.010	≤1.20	≤0.70	≤0.50	≤0.50	0.0005-0.006	≥0.01

NM400 Steel Mechanical Properties

Steel NM 400 sheet or plate is renowned for its exceptional properties, including high tensile strength, superior wear resistance, and excellent durability. These properties make it an ideal material for applications where high resistance to wear and tear is crucial.

Mechanical properties of NM 400
Grade	Mechanical Property
NM 400	Yield	Tensile	Elongation
	Min Mpa	Mpa	Min %
	1000	1200	10

NM400	Thickness	Hardness (HB)
	≤80mm	370~430
	＞80~120mm	360~440

Specifications:

Commodity	Special Steel NM500 High Strength China Wear Resistant Steel Plate
Standard Grade	DIN : XAR300, XAR400, XAR450, XAR500, XAR600, X120Mn12; 1.3401, etc... SSAB : WELDOX700, WELDOX900, WELDOX960, etc. NF : FORA400, FORA500; Creusabro4800, Creusabro8000, etc. EN : QUARD400, QUARD450, QUARD500; RAEX320, RAEX400, RAEX500, etc. JIS : JFE-EH360, JFE-EH400, JFE-EH500; WEL-HARD400, WEL-HARD500,etc. GB : NM360, NM400, NM450, NM500, NM550, NM600, etc.
Thickness	2-300mm(2-100mm usually used)
Width	1000-3000mm(1000-2200mm usually used)
Length	1000-12000mm as your request
Surface	clean, finishing, blasting and painting according to your request
Delivery State	hot-rolled, controlled rolling, normalizing, annealing, tempering, quenching, N+T, Q+T, and other delivery states as your request

NM360 NM400 NM450 NM500 Chemical Composition:

Grade	C	Si	Mn	P	S	Cr	Mo	Ni	B
NM360	≤ 0.25	≤ 0.70	≤ 1.30	≤ 0.025	≤ 0.01	≤ 1.40	≤ 0.50	≤ 1.00	≤ 0.004
NM400	≤ 0.25	≤ 0.70	≤ 1.60	≤ 0.025	≤ 0.01	≤ 1.40	≤ 0.50	≤ 1.00	≤ 0.004
NM450	≤ 0.26	≤ 0.70	≤ 1.60	≤ 0.025	≤ 0.01	≤ 1.50	≤ 0.50	≤ 0.08	≤ 0.004
NM500	≤ 0.38	≤ 0.70	≤ 1.70	≤ 0.02	≤ 0.01	≤ 1.20	≤ 0.65	≤ 1.00	0.005-0.006

NM360 NM400 NM450 NM500 Physical Performance:

GRADE	Physical Performance
	Thickness (mm)	Y.P (MPa)	T.S (MPa)	E.L A5 (%)	HB	Strength
	Thickness (mm)	Y.P (MPa)	T.S (MPa)	E.L A5 (%)	HB	°C	J/cm2
NM400	3-40	≥1000	≥1250	≥10	360~430	-20	≥30
NM450	12-40	≥1250	≥1500	≥10	430~480	-20	≥30
NM500	40-80	≥1300	≥1700	≥10	480~520	-20	≥30

AR400 VS AR450 VS AR500

The technical difference between AR400, AR450 and AR500 is the Brinell Hardness Number (BHN), which indicates the material's level of hardness:

AR400: 360-440 BHN Typically
AR450: 430-480 BHN Typically
AR500: 460-544 BHN Typically

8. Application of NM 400 Plate

NM400 material plate is widely used in extensive applications in areas where durability and resistance to wear are paramount. It is commonly used in the construction of heavy machinery, mining equipment, and tools, owing to its ability to withstand extreme conditions and resist abrasion. Some typical applications are:

Wear-resistant spare parts, such as high-efficiency powder selecting wear-resistant parts in cement machinery, mill steel plates, mixer blades, fan blades, mill rollers and so on.

Various wear-resistant conveying pipes, such as powder air conveying system, blast furnace slag system, propeller blades, etc.

Customized welding solutions for completing on-site construction projects, such as silos, chutes, large buckets, etc.

Providing fabrication devices for on-site customized welding repairs to reduce on-site welding workload, such as buckets for work machines and dredging buckets for dredgers.

NM400 steel, with its remarkable wear resistance and high strength, is a go-to material for industries requiring robust and durable steel. For inquiries and price, please contact info@gneesteels.com for a best quote price of NM 400 steel plates. We are your reliable supplier of nm400 steel plate.

Currently, wear-resistant steel under 6 mm is mainly used in lightweight dumper carriage as the thinnestavailable specification is 3 mm. its shape and bending property are both in the domestic top level (the only cargocarriage that side wall and bottom plate are made of 3mm wear -resistant steel). The advantage of wear-resistantdump truck compared with traditional one lies in:

1. light weiaht and reduced eneray consumption, 50% and 33%weight loss compared with arade of 345 MPa and 700MPa respectively:

2. compared with the original material. ithas belter wear resistance (3.5 times hicher), longer service time and less maintenance;

3. the anti-smashingperformance of carriage is improved under different working conditions.

What steel is similar to AR400?

AR500 steel plate is chemically similar to AR400 steel plate, except the hardness range is higher and it has more carbon and manganese than AR400. These elemental differences help the steel achieve a higher surface hardness. To be classified as AR500, the hardness needs to clock in between 477 BHN and 550 BHN.

Can AR400 be welded?

AR400 is a quench and tempered steel and may be difficult to weld due its high strength and harden ability.

Can you laser cut NM400?

Cut any material: Cold cutting techniques such as machining, routing and sawing can cut thin metals but struggle with high strength materials such as NM400. Laser cutting is not affected by the material's hardness and offers extreme precision.

Wear layer hardness specifications:

≤4mm thickness: HRC54-58

>4mm thickness: HRC56-62

‌Wear Plate Applications:‌

‌Thermal power plants:‌ Medium-speed coal mill cylinder liners, fan impeller housings, dust collector inlet ducts, slag conduits, bucket wheel liner plates, separator connecting pipes, coal crusher liners, coal hoppers and crusher liners, burner nozzles, coal drop chutes and funnel liners, air preheater support guard plates, separator guide vanes. These components do not require extremely high hardness or wear resistance. Recommended: NM360/400 wear-resistant steel plates, 6-10mm thickness.

‌Coal yards:‌ Feed chutes and funnel liners, hopper bushings, fan blades, pusher floor plates, cyclone dust collectors, coke guide liners, ball mill liners, drill stabilizers, screw feeder bells and bases, mixer shovel bucket liners, rotary feeders, dumper floor plates. Harsh coal yard environments demand corrosion resistance and wear strength. Recommended: NM400/450 HARDOX400, 8-26mm thickness.
‌Cement plants:‌ Chute liners, end sleeves, cyclone dust collectors, classifier blades and guide vanes, fan blades and liners, recovery hopper liners, screw conveyor base plates, pipe components, clinker cooler tray liners, transfer chute liners. These require better wear and corrosion resistance. Recommended: NM360/400 HARDOX400, 8-30mm thickness.
‌Loading machinery:‌ Unloader chain plates, hopper liners, grab bucket cutter edges, automatic dumper tipping plates, dump truck bodies. These demand extreme wear resistance and hardness. Recommended: NM500 HARDOX450/500, 25-45mm thickness.
‌Mining machinery:‌ Ore/rock crusher liners and blades, conveyor liners and baffle plates. These require ultimate wear resistance. Recommended: NM450/500 HARDOX450/500, 10-30mm thickness.
‌Construction machinery:‌ Cement pusher teeth, concrete mixing plant and mixer liners, dust collector liners, brick machine mold plates. Recommended: NM360/400, 10-30mm thickness.
‌Engineering machinery:‌ Loader/dozer/excavator bucket plates, side cutter edges, floor plates, blades, rotary drill rods. These require ultra-high hardness and wear resistance. Recommended: NM500 HARDOX500/550/600, 20-60mm thickness.
‌Metallurgical machinery:‌ Iron ore sintering machines, transfer elbows, sintering machine liners, scraper conveyor liners. These require high-temperature resistant and high-hardness plates. Recommended: HARDOX600/HARDOXHiTuf series.
‌Additional applications:‌ Sand mill cylinders and blades, components of various yards and port machinery, bearing structural parts, railway wheel components, rolls.