Standard Fire brick with I.S.6 quality has chemical property of 30 % AlO; 2.00% FeO can withstand up to 1300C.Standard Fire brick with I.S.8 quality has chemical property of 40 % AlO; 2.00% FeO can withstand up to 1400C.Fire brick burner block with I.S.6 quality has chemical property of 30 % AlO; 2.00% FeO can withstand up to 1300C.Fire brick burner block with I.S.8 quality has chemical property of 40 % AlO; 2.00% FeO can withstand up to 1400C.Fire brick Side arch with I.S.6 quality has chemical property of 30 % AlO; 2.00% FeO can withstand up to 1300C.Fire brick Side arch with I.S.8 quality has chemical property of 40 % AlO; 2.00% FeO can withstand up to 1400C.Fire brick End arch with I.S.6 quality has chemical property of 30 % AlO; 2.00% FeO can withstand up to 1300C.Fire brick End arch with I.S.8 quality has chemical property of 40 % AlO; 2.00% FeO can withstand up to 1400C.High alumina brick50 quality has chemical property of 50 % AlO; 2.50% FeO can withstand up to 1450C.High alumina brick60 quality has chemical property of 60 % AlO; 2.50-3.00% FeO can withstand up to 1460C.High alumina brick70 quality has chemical property of 70 % AlO; 3.00 -3.50% FeO can withstand up to 1480C.