BUREAU OF INDIAN STANDARDS

Type/Size/Grade/Variety and Brand Name for CML No.       4100143465

Date : 01-04-2025


Brand Name :

Type/Size/Grade/Variety :

Name of the Product Heat- Treated Steels, Alloy Steels and Free-Cutting Steels – Ball and Roller Bearing Steels Steel Grade/ Designation 100 Cr6, 20Cr4, 20CrMo4, 20MnNiCrMo3-2 20Cr4 Surface Condition +HW +HW Heat Treatment Condition +U +TH Form and Size Bars of Diameter from 16 mm upto and including 260mm Optional/ Supplementary Requirements Not applicable (as per clause 5.2) Steel grade/ designation: 100Cr6*, 100CrMnSi4-4, 100CrMnSi6-4, 100CrMnSi6-6, 100CrMo7, l00CrMo7-3, 100CrMo7-4, 100CrMnMoSi8-4-6 100Cr6, 100CrMnSi4-4, 100CrMnSi6-4, 100CrMnSi6-6, 100CrMo7, 100CrMo7-3, 100CrMo7-4, 100CrMnMoSi8-4-6 Surface condition: +HW +HW, +CP Heat treatment condition: +U, +S, +A/+AT, +AC +AC, +AC+C, +SR Form and size: Bars of dia. from 16 mm up to & including 260 mm Tubes of outside dia. from 22 mm up to & including 177.8 mm Wall thickness from 2.5 mm upto including 32.5 mm Name of the product Steel Grade/Designation Surface Condition Heat Treatment Condition From and Size Heat - Treated steels, alloy steels and free - Cutting steels - Ball and roller bearing steels Through hardening bearing steels 100Cr6*, 1000CrMnSi4-4, 100CrMnSi6-4, 100CrMnSi6-6, 100CrMo7, 100CrMo7-3, 100CrMo7-4, 100CrMnMoSi8-4-6 +HW, +CP +U, +S, +A/+AT, +AC, +AC+C, +SR Bars of diameter from 16 mm to up to & including 800 mm Tubes of outside dia. From 22 mm up to & including 177.8 mm wall thickness from 2.5 mm up to & including 32.5 mm Case hardening bearing steels 20Cr4, 20CrMo4, 20MnNiCrMo3-2 +HW +U,+TH only for 20Cr4 Bars of diameter from 16 mm to up to & including 800 mm