Grupo SIMEC

Standards	Main Applications	Main Products
NBR 7007 MR 250 / ASTM A36	Metal structures, metalwork, machinery and agricultural implements	Cantoneira, Perfil I, Perfil U, Perfil T, Barra Redonda, Barra Quadrada e Barra Chata
NBR 7007 AR 350 ou AR 415 / ASTM A572	Power and telecommunications transmission towers, metal structures in general, machinery and equipment, road and rail implements	Cantoneira, Barra Chata e Barra Redonda
NBR 7007 AR 350 COR / ASTM A588	Metal structures in general, machinery and equipment and other applications where additional protection against atmospheric corrosion is required	Cantoneira, Barra Chata e Barra Redonda
SAE J403 / J404	Tie rods, parts for machines and equipment, wire drawing, forging, machining and spring bundles	Barras Redondas e Barras Chatas
NBR 7480 CA50	Reinforced concrete structures	Vergalhão

NBR 7007	ASTM	Main Properties	Yield Limit (MPa)	Tense Limit (MPa)	Proof Stress Lo = 200mm (%)
MR 250	A36	Structural carbon steel of medium mechanical resistance	min. 250	400 to 550	min. 20
AR 350	A572 Level 50	Highly resistant microalloyed structural steels	min. 345	min. 450	min. 18
AR 415	A572 Level 60	Highly resistant microalloyed structural steels	min. 415	min. 520	min. 16
AR 350 COR*	A588*	Microalloyed structural steel with high mechanical resistance and higher resistance to atmospheric corrosion	min. 345	min. 485	min. 18

Standards	Main Properties	Carbon (%)	Manganese (%)	Phosphorus (%)	Sulfur (%)
SAE 1020	General purpose low carbon steel	0,18 – 0,23	0,30 – 0,60	max. 0,040	max. 0,050
SAE 1045	Medium carbon steel	0,43 – 0,50	0,60 – 0,90	max. 0,040	max. 0,050

Quality Standards