Grade W-1 W-2 W-3 W-4
W(min) 99.95% 99.95% 99.90% 99.80%
FE 0.005 0.005 0.02 0.02
SI 0.002 0.002 0.015 0.015
CA 0.002 0.002 0.015 0.015
AL 0.002 0.002 0.005 0.005
MG 0.001 0.002 0.005 0.005
NI 0.003 0.003 0.01 0.01
SB 0.0001 0.0001 0.0001 0.002
AS 0.001 0.001 0.001 0.005
SN 0.001 0.001 0.001 0.003
MO 0.01 0.01 0.002 0.08
P 0.001 0.001 0.001 0.005
O 0.003 0.003 0.02 0.03

Size and weight:
Round bar : dia:14mm * length:500-600mm
Square bar : 15-18mm x 15-18mm x 500mm
Weight each 1.0kg/piece-2.0kg/piece