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102.5 - Copper "Benchmark" (block, chip and rod forms)

SRMs with a "C" prefix are chill-cast blocks approximately 32 mm square and 19 mm thick.

PLEASE NOTE: The tables are presented to facilitate comparisons among a family of materials to help customers select the best SRM for their needs. For specific values and uncertainties, the certificate is the only official source.


- Certified values are normal font
- Reference values are italicized
- Values in parentheses are for information only


Detail - Detail    Certificate - Certificate    Report of Investigation - Report of Investigation    MSDS - MSDS    Data Files - Data Files    Questionaire - Questionnaire


  399 454 457 494 495 498 500 C1251a C1252a C1253a
Status   >> Now Selling Now Selling Now Selling Now Selling Now Selling Now Selling Now Selling Now Selling Now Selling Now Selling
Description   >> Unalloyed Copper - Cu VI
Unalloyed Copper XI (chips) Unalloyed Copper IV (solid) Unalloyed Copper I (solid) Unalloyed Copper II (solid) Unalloyed Copper V (solid) Unalloyed Copper - Cu VII Phosphorus Deoxidized Copper - Cu VIII Phosphorus Deoxidized Copper - Cu IX Phosphorus Deoxidized Copper - Cu X
  Detail Certificate MSDS Detail Certificate MSDS Detail Certificate MSDS Detail Certificate MSDS Detail Certificate MSDS Detail Certificate MSDS Detail Certificate MSDS Detail Certificate MSDS Detail Certificate MSDS Detail Certificate MSDS
Unit of Issue   >> 50 g 35 g rod rod rod rod rod block block block

Concentration are expressed as mass fraction, in mg/kg (unless noted by an asterisk * for %).

Aluminum (Al) <2     <2 <2 <2 <2 <20 <20 176
Antimony (Sb) 30 24 0.214 4.5 8.0 7.4 102 14.9 42 139
Arsenic (As) 47 46 <2 2.6 1.6 25 140 16 118 436
Bismuth (Bi) 10.5 19 0.22 0.35 0.50 2.0 24.5 3.7 19 56
Cadmium (Cd) <1   <1 0.5 0.4 <22 <1 <3 16.9 70
Chromium (Cr) 0.5   <2 2.0 6.0 (0.3) 0.5 3 19 260
Cobalt (Co) 0.5 4 0.227 0.5   2.7 0.6 13.2 87 454
Copper (Cu) 99.79* 99.84* 99.97* 99.908* 99.944* 99.98* 99.70* 99.89* 99.87* 99.46*
Gold (Au) 4 7.5 <0.05 0.07 0.13 0.1 10 15.5 33.9 72
Iron (Fe) 20.0 50 2.4 147 96 11 41 285 72 290
Lead (Pb) 114 66 0.512 26.5 3.25 10 128 23.5 60 243
Magnesium (Mg) <1   <1 <1 <1 <1 <1 <20 <20 150
Manganese (Mn) 0.3   <0.1 3.7 5.3 0.3 0.2 4.6 43 357
Nickel (Ni) 506 150 0.67 11.7 5.4 7.0 603 23.6 128 491
Oxygen (O)     367              
Palladium (Pd)   (0.1)                
Phosphorus (P)               420 125 561
Selenium (Se) 95 479 4.05 2.00 0.63 17.5 214 11 56 136
Silicon (Si) <2   <1 <2 <2 <2 <2 <50 <100 580
Silver (Ag) 117 286 8.086 50.5 12.2 20.1 181 80 158 494
Sulfur (S) 10   4 15 13 (11) 9 35 70 50
Tellurium (Te) 50 27 0.296 0.58 0.32 10.1 153 16 54.6 168
Tin (Sn) ~90 2.2 <0.1 70 1.5 5 ~200 16 120 499
Titanium (Ti)     <1              
Zinc (Zn) 45 7 <3 405 12.2 25 114 24 69.4 329

- Certified values are normal font
- Reference values are italicized
- Values in parentheses are for information only

* Mass fraction in %