BASIC NAME STANDARD NAME MODIFIER CALIBRATION MATERIAL STEEL PRESENTATION DISC SUPPLY INDIVIDUAL ADDITIONAL REQUIREMENTS SEE OBS COMMERCIAL REFERENCE BAS-BCS-CRM 434/2 OBS: – C = 0.275; – SI = 0.51; – MN = 1.546; – P = 0.0611; – S = 0.0141. SPECIFICATION NOTES: – THE MATERIAL ANALYSIS CERTIFICATE MUST BE SENT TOGETHER WITH THE MATERIAL, BECAUSE IT IS A CERTIFIED REFERENCE MATERIAL.