Annealed heat treatment S460NL carbon steel plate sheet

The properties of S460NL carbon steel plate sheet ASTM A36 steel allow it to deform steadily when the stress increase exceeds the yield strength. This ductility enables the building to stand still after meeting the structural limit in an emergency. Other S460NL carbon steel plate sheet high-performance steel, such as bridge strand, has very strong strength and brittleness, and its deformation is minimum before severe fracture of bridge strand.

Today, the local plate price has weakened. The price of BBN steel 14-20mm plate S355JR structural steel weighed and double cut is 5520-5550 yuan/ton, and the price of low alloy of the same specification is 150-200 yuan/ton. In terms of the market, due to the sluggish actual market transactions, the quotations of medium and heavy plates at the beginning of the week weakened slightly.

Alloying elements, especially Mn, Ni, Cr, Mo and B (trace elements), can increase the hardenability of the S460NL carbon steel plate sheet steel, so as to obtain a deeper hardened layer and adopt a slower quenching cooling rate. Alloying elements, especially Si, Mo, V and W, improve the tempering stability of the S460NL carbon steel plate sheet steel to slow down the tempering softening effect. When the content of W, Mo and V is high, secondary hardening will occur during quenching and tempering, so as to improve the hot hardness of the steel.

India's Ministry of S460NL carbon steel plate sheet steel has extended the deadline for steel product certification from April 23 to three months as the Bureau of standards (BIS) has closed factories and laboratories due to the current blockade and travel ban. According to the order of the Ministry of Commerce, "the implementation date of the following Indian Standards is extended for three months after April 23, according to the notice of the order for S460NL carbon steel plate sheet steel products 2000."