High strength abrasion resistant steel plates GB/T709 NM400

Rolling range:
Thickness*Width*Length 3-100mm*1000-4200mm*5000-18000mm

High strength abrasion resistant steel plates NM400 Test:
Low temperature impacting test, Ultrasonic examination, Normalized, Quenched and tempered, Tempered, TMCP and Tempered.

NM400 Chemical Composition:

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）	0.15	0.7	1.6	0.025	0.01	0.3	0.25	0.25	0.004	0.33	0.23
8-20	0.15	0.7	1.6	0.025	0.01	0.5	0.25	0.25	0.004	0.37	0.27
（20）-32	0.18	0.7	1.6	0.025	0.01	1	0.25	0.25	0.004	0.48	0.29
（32）-45	0.22	0.7	1.6	0.025	0.01	1.4	0.5	0.6	0.004	0.57	0.31
（45）-51	0.22	0.7	1.6	0.025	0.01	1.4	0.5	0.6	0.004	0.57	0.38
（51）-80	0.27	0.7	1.6	0.025	0.01	1.4	1	0.6	0.004	0.65	0.41
（80）-130	0.32	0.7	1.6	0.025	0.01	1.4	1.5	0.6	0.004	0.73	0.48

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

NM400 Mechanical properties:

Grade	Mechanical Property			Charpy V Impact Test
NM 400	Yield	Tensile	Elongation	Degree	longitudinal
	Min Mpa	Mpa	Min %	-40	J
	1000	1250	10	-40	45

NM400 is an abrasion resistant plate, intended for applications where demands are imposed on abrasion resistance in combination with good cold bending properties. NM400 offers very good weldability.

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.