IS 3717 : 1977 Refined secondary lead

UDC 669.448.5 MTD 9
Reaffirmed 2019

1 Scope

1.1 This standard covers the requirements for three grades ofrefined secondary lead, namely, Grades 99.97, 99.9 and 99.8.

2 References

IS 2 :1960 Rules for rounding offnumerical values

IS 403 : 1964Methods of chemical analysis of lead and antimonial lead

IS 1387 : 1967General requirements for the supply of metallurgicalmaterials

IS 8439 : 1977Methods of sampling lead and lead alloys