Brammer Standard Company, Inc.

1 Brammer Standard company , Inc. Certificate of AnalysisBS 286 AECertified Reference Material for Nodular Cast Iron Certified Estimate of Certified Values 3 Value Uncertainty 12B Values3,4Al ( )As ( )Ca ( )Co ( )Fe [ ]N ( )Nb ( )O ( )Sn ( )W ( )Zr( ) For each element, the certified value listed is the present best estimate of the true value based on the mean of the weighted results of an 1 interlaboratory testing program. See page 4 for more information on its calculation.

2 For each element, the uncertainty listed is based on a statistical evaluation of the contributions of homogeneity and the interlaboratory testing 2 program. See page 4 for more information on its calculation. Values are given in weight percent. 3 Values in parentheses are not certified and are provided for information only. 4 The requirements of ISO Guides 31, 34, and 35 were followed for the preparation of this Certified Reference Material andcertificate of analysis. This is a Certified Reference Material as defined by ISO Guide Standard company , Inc.

3 , 14603 Benfer Road, Houston, TX 77069-2895 Telephone: (281) 440-9396 Fax: (281) 440-4432 Website: Number 286AE-091914 Page 1/6BS 286AE * Code for method Certified values listed as weight percent Analysis*B *C *Cr *Cu *Mg *Mn *Mo *Ni Std Standard company , Inc., 14603 Benfer Road, Houston, TX 77069-2895 Telephone: (281) 440-9396 Fax: (281) 440-4432 Website: Number 286AE-091914 Page 2/6BS 286AE * Code for method Certified values listed as weight percent Analysis*P *S *Si *Ti *V Std 286AE * Code for method Informational values listed as weight percent Analysis*Al *As *Ca *Co *Fe *N *Nb *O Std (Informational)( )( )( )( )[ ]( )( )( ) Analysis*Sn *W *Zr Std (Informational)( )( )( ) Brammer Standard company , Inc.

4 , 14603 Benfer Road, Houston, TX 77069-2895 Telephone: (281) 440-9396 Fax: (281) 440-4432 Website: Number 286AE-091914 Page 3/6 For each element, in accordance with the requirements of ISO Guides 34 and 35, an effort must be made to account forthe effects on the certified value of the uncertainty estimate from homogeneity testing (H) and the uncertainties of thecontributing laboratories. The average (A) is calculated using a weighted mean where the reciprocal of the square of eachLLLlaboratory s combined uncertainty (C), calculated from its Standard deviation (S) and its uncertainty estimate (U), is usedLLas the weight (W) for it s mean (M).

5 The Standard deviation (S) is calculated as the square root of the reciprocal of the121sum of the weights. U is the combined uncertainty from homogeneity and labs. U is U times the coverage factor (95 %32t-statistic). U is U divided by the square root of the number of determinations (n). Thus: All but the final reported values are taken to two significant figures as determined by each quantity s uncertainty estimate. 3 The final reported Uncertainty is U rounded to one significant figure and represents the half width of the 95 % confidenceinterval for the Certified value.

6 The final reported Certified value is A rounded to the same decimal place as theUncertainty. The Tolerance is the half width of the 95 % confidence interval for measurements rounded to the samedecimal place as the Uncertainty. The Uncertainty is a measure of the quality of the Certified value. The Tolerance is ameasure of the expected performance of an further information regarding the confidence interval for the certified value see ISO Guide 35:2006 section 6. Analytical Method Codes:1 Combustion (ASTM E1019)7 Photometric13 Titrimetric2 Fusion(ASTM E 1019)

7 8 Flame Atomic Absorption14 DCP Atomic Emission 3 Spark Atomic Emission9GF Atomic Absorption15HG Atomic Fluorescence4 ICP Atomic Emission10X-Ray Fluorescence16 Difference5 ICP Mass Spectrometry11GD Atomic Emission17 Atomic Absorption Spectroscopy6 Gravimetric12GD Mass Spectrometry18 Volumetric ICP = Inductively Coupled Plasma GF = Graphite Furnace GD = Glow DischargeDCP = Direct Current Plasma HG = Hydride GenerationLaboratoryLocationRegistrarAcc reditationBrammer Standard company , , TXA2LA17025, Guide 34 Chemical Testing Institute, Daye Special Steel Co.

8 , ChinaCNAS17025 Physical and Chemical Testing Institute ofTechnical Center, Chongqing Iron & Steel (Group)Chongqing, ChinaCNAS17025 Testing Center, Shanghai Reasearch Institute ofMaterialsShanghai, ChinaCNAS17025, Guide 34 Physical and Chemical Testing Institute of TechncalCenter, Benxi Iron & Steel (Group) Co., , ChinaCNAS17025 Chemical Testing Institute, Zhengzhou MachineryResearch InstitutionZhengzhou, ChinaCNAS17025 Jey Swen Enterprise , TaiwanA2LA = American Association for Laboratory AccreditationCNAS = China National Accreditation ServiceBrammer Standard company , Inc.

9 , 14603 Benfer Road, Houston, TX 77069-2895 Telephone: (281) 440-9396 Fax: (281) 440-4432 Website: Number 286AE-091914 Page 4/6 Analysis: Chemical analyses were made on solid pieces and chips representative samples for the certified portion of the lot inaccordance with ASTM Standard Practice E 1806. The laboratories participating in the testing followed the requirements of ISOS tandard 17025. Traceability: The following Certified Reference Materials were used to validate the analytical data: 501-676, 501-991, 502-416; BSCC30, CC31, HON-T, LE204, 27, 280, 281D, 285, 285AB, 291A; ECRM 096-1, 284-1, 285-1; SRM C2423, C2425, C2425A, 338, : This Certified Reference Material (CRM) was tested for homogeneity using ASTM Standard Method E 826 and foundacceptable.

10 It was also examined by spark atomic emission spectrometry and found to be compatible with the following ReferenceMaterials 501-676, 501-991, 502-416; BS CC30, CC31, HON-T, LE204, 27, 280, 281D, 285, 285AB, 291A; ECRM 096-1, 284-1,285-1; SRM C2423, C2425, C2425A, 338, statement: ISO Guide 31 states that the certification should contain an expiration date for all materials where instability hasbeen demonstrated or is considered possible, after which the certified value is no longer guaranteed by the certifying body.