GB/T24186 NM400 steel plate for abrasion resistant plate

GB/T24186 NM400 steel plate is a high strength wear-resistant steel plate. NM400 has high mechanical strength, its mechanical properties are 3 to 5 times of that of ordinary low alloy steel plate, and the wear resistance of mechanical related parts can be significantly improved.

Therefore, the service life of the machine is improved and the production cost is reduced. The surface hardness of GB/T24186 NM400 steel plate usually reaches 360-450HB. GB/T24186 NM400 steel plate is used in the processing and manufacturing of wear-resistant and vulnerable parts for mining and various construction machinery.

GB/T24186 NM400 steel plate chemical composition

Thickness mm	C max	Si max	Mn max	P max	S max	Cr max	Ni max	Mo max	B max	CEV
3-8	0.15	0.7	1.6	0.025	0.01	0.3	0.25	0.25	0.004	0.33
8-20	0.15	0.7	1.6	0.025	0.01	0.5	0.25	0.25	0.004	0.37
20-32	0.18	0.7	1.6	0.025	0.01	1.4	0.25	0.25	0.004	0.48
32-45	0.22	0.7	1.6	0.025	0.01	1.4	0.5	0.6	0.004	0.57
45-51	0.22	0.7	1.6	0.025	0.01	1.4	0.5	0.6	0.004	0.57
51-80	0.27	0.7	1.6	0.025	0.01	1.4	1	0.6	0.004	0.65
80-130	0.32	0.7	1.6	0.025	0.01	1.4	1.5	0.6	0.004	0.73

Plate thickness below 4 mm only after special agreement.
CEV = C+Mn/6+(Cr+Mo+V)5+(Cu+Ni)/15.
CET=C+ (Mn-Mo) /10+( Cr+ Cu/20+ Ni/40.

GB/T24186 NM400 steel plate mechanical properties

Grade	Yield strength	Tensile strength	Elongation	Charpy V Impact test
GB/T24186 NM400	Min Mpa	Mpa	Min %	Degree	Longitudinal
GB/T24186 NM400	1000	1250	10	-40	45J

GB/T24186 NM400 steel plate is an abrasion resistant plate with a hardness of 400 HBW. intended for applications where demands are mposed on abrasion resistance in combination with good cold bending properties.
GB/T24186 NM400 steel plate offers very goodweldability.Supplementary Technology: Brinell hardness, HBW according to EN ISO 6506-1, on a milled surface 0,5-2 mm below plate surface per heat and 40 tons. Tests are made for every variation of 15 mm in the thickness of plates from the same heat