what is difference between 316H and 316L SS material? as we are using 316L ss material impulse lines for Low pressure instruments and 316H SS material impulse line for high pressure impulse lines.

and i have also confusion that my quality engineer suggest me to use 316L ss electrod for welding in above both type of impulse line (i.e. 316H and 316L ss)

thanks in advance.

 

the -H, -L refer to carbon content only