MEASURAND: Mass fraction of Chromium in low alloy steel
Degrees of equivalence: Di = (xi - xR) and expanded uncertainty Ui (k = 2), both expressed in %
MEASURAND: Mass fraction of Manganese in low alloy steel
Degrees of equivalence: Di = (xi - xR) and expanded uncertainty Ui (k = 2), both expressed in %
MEASURAND : Mass fraction of Nickel in low alloy steel
Degrees of equivalence: Di = (xi - xR) and expanded uncertainty Ui (k = 2), both expressed in %
MEASURAND: Mass fraction of Molybdenum in low alloy steel
Degrees of equivalence: Di = (xi - xR) and expanded uncertainty Ui (k = 2), both expressed in %
MEASURAND : Mass fraction of Chromium in low alloy steel
The table below gives the degrees of equivalence for participant laboratory i.
Results are presented under A4 printable format in Summary Results (.PDF file).
MEASURAND : Mass fraction of Manganese in low alloy steel
The table below gives the degrees of equivalence for participant laboratory i.
Results are presented under A4 printable format in Summary Results (.PDF file).
MEASURAND : Mass fraction of Nickel in low alloy steel
The table below gives the degrees of equivalence for participant laboratory i.
Results are presented under A4 printable format in Summary Results (.PDF file).
MEASURAND : Mass fraction of Molybdenum in low alloy steel
The table below gives the degrees of equivalence for participant laboratory i.
Results are presented under A4 printable format in Summary Results (.PDF file).
| Metrology area, Sub-field | Chemistry and Biology, Inorganics |
| Description | Minor elements in steel |
| Time of measurements | 2003 - 2004 |
| Status | Approved for equivalence |
| Final Reports of the comparisons | |
| Measurand | Mass fraction of Cr, Ni, Mn and Mo in low alloy steel: levels in the range of 0.1% to 3% |
| Transfer device | Bottles containing small chips of low alloy steel |
| Comparison type | Key Comparison |
| Consultative Committee | CCQM (Consultative Committee for Amount of Substance) |
| Conducted by | CCQM (Consultative Committee for Amount of Substance) |
| Comments | Results published on 24 March 2006 Minor elements in low alloy steel |
| Pilot institute |
NMIJ AIST
National Metrology Institute of Japan Japan |
| Contact person | A. Hioki +81 29 861 9341 |
| Additional |
| Pilot laboratory | |
|---|---|
| NMIJ AIST |
National Metrology Institute of Japan, Japan, APMP |
| BAM |
Bundesanstalt für Materialforschung und -prüfung, Germany, EURAMET |
| CENAM |
Centro Nacional de Metrologia, Mexico, SIM |
| CSIR-NML |
Council for Scientific and Industrial Research, National Metrology Laboratory (became NMISA in 2007), South Africa, AFRIMETS |
| KRISS |
Korea Research Institute of Standards and Science, Korea, Republic of, APMP |
| LGC |
Laboratory of the Government Chemist, United Kingdom, EURAMET |
| NIST |
National Institute of Standards and Technology, United States, SIM |
| SP |
Technical Research Institute of Sweden from 2017 Research Institutes of Sweden AB, Sweden, EURAMET |
| VNIIM |
D.I. Mendeleyev Institute for Metrology, Rosstandart, Russian Federation, COOMET |
This page proposes print-out on A4 paper (portrait) of the comparison details (best printed out using a black and white printer).
Please, select items to be printed out, then click on "OK" :
MEASURAND : Mass fraction of Chromium in low alloy steel
|
The key comparison reference value, xR, is calculated as the median of all participant results. Its expanded uncertainty (k = 2), UR, is computed as explained on page 11 of the Final Report. xR = 0.5091 %, UR = 0.0030 % |
| The degree of equivalence of laboratory i relative to the key comparison reference value is given by a pair of terms, both expressed in %: Di = (xi - xR) and its expanded uncertainty Ui (k = 2), Ui = 2(ui2 + uR2)1/2. |
| The degrees of equivalence between pair of laboratories have not been computed for this key comparison. |
MEASURAND : Mass fraction of Manganese in low alloy steel
|
The key comparison reference value, xR, is calculated as the median of all participant results. Its expanded uncertainty (k = 2), UR, is computed as explained on page 11 of the Final Report. xR = 0.5063 %, UR = 0.0016 % |
| The degree of equivalence of laboratory i relative to the key comparison reference value is given by a pair of terms, both expressed in %: Di = (xi - xR) and its expanded uncertainty Ui (k = 2), Ui = 2(ui2 + uR2)1/2. |
| The degrees of equivalence between pair of laboratories have not been computed for this key comparison. |
MEASURAND : Mass fraction of Nickel in low alloy steel
|
The key comparison reference value, xR, is calculated as the median of the participant results with the exclusion of CENAM and NIST results. Its expanded uncertainty xR = 2.5490 %, UR = 0.0123 % |
| The degree of equivalence of laboratory i relative to the key comparison reference value is given by a pair of terms, both expressed in %: Di = (xi - xR) and its expanded uncertainty Ui (k = 2), Ui = 2(ui2 + uR2)1/2. |
| The degrees of equivalence between pair of laboratories have not been computed for this key comparison. |
MEASURAND : Mass fraction of Molybdenum in low alloy steel
|
The key comparison reference value, xR, is calculated as the median of all participant results. Its expanded uncertainty (k = 2), UR, is computed as explained on page 11 of the Final Report. xR = 1.0393 %, UR = 0.0058 % |
| The degree of equivalence of laboratory i relative to the key comparison reference value is given by a pair of terms, both expressed in %: Di = (xi - xR) and its expanded uncertainty Ui (k = 2), Ui = 2(ui2 + uR2)1/2. |
| The degrees of equivalence between pair of laboratories have not been computed for this key comparison. |
MEASURAND : Mass fraction of Chromium in low alloy steel
xi : result of measurement carried out by laboratory i
ULabi : expanded uncertainty of xi
kLabi : coverage factor, ULabi = kLabi ui , with ui the combined standard uncertainty of xi
| Lab i | xi / % |
ULabi / % |
kLabi |
| BAM | 0.5115 | 0.0018 | 2 |
| CENAM |
0.5130 |
0.0127 |
2.2 |
| CSIR-NML |
0.5114 |
0.0122 |
2 |
| KRISS |
0.5068 |
0.0067 |
2.06 |
| LGC | 0.5056 | 0.0065 | 2 |
| NIST | 0.5060 | 0.0042 | 2 |
| NMIJ | 0.5118 | 0.0021 | 2 |
| VNIIM | 0.506 | 0.018 | 2 |
MEASURAND : Mass fraction of Manganese in low alloy steel
xi : result of measurement carried out by laboratory i
ULabi : expanded uncertainty of xi
kLabi : coverage factor, ULabi = kLabi ui , with ui the combined standard uncertainty of xi
| Lab i | xi / % |
ULabi / % |
kLabi |
| BAM | 0.511 | 0.007 | 2 |
| CENAM |
0.5017 |
0.0112 |
2.11 |
| CSIR-NML |
0.5067 |
0.0060 |
2 |
| KRISS |
0.5072 |
0.0011 |
2.04 |
| LGC | 0.5058 | 0.0048 | 2 |
| NIST | 0.5040 | 0.0077 | 2 |
| NMIJ | 0.5049 | 0.0043 | 2 |
| VNIIM | 0.508 | 0.018 | 2 |
MEASURAND : Mass fraction of Nickel in low alloy steel
xi : result of measurement carried out by laboratory i
ULabi : expanded uncertainty of xi
kLabi : coverage factor, ULabi = kLabi ui , with ui the combined standard uncertainty of xi
| Lab i | xi / % |
ULabi / % |
kLabi |
| BAM | 2.5497 | 0.0429 | 2 |
| CENAM(1) |
2.6502 |
0.1028 |
2.36 |
| CSIR-NML |
2.560 |
0.058 |
2 |
| KRISS |
2.524 |
0.022 |
1.97 |
| LGC |
2.549 |
0.047 |
2 |
| NIST(2) |
2.479 |
0.021 |
2 |
| NMIJ | 2.5385 | 0.0072 | 2 |
| SP | 2.536 | 0.021 | 2 |
| VNIIM | 2.58 | 0.09 | 2 |
(1) Result from CENAM as originally submitted and used for calculation of equivalence.
After circulation of the Draft A Report, CENAM reported a problem of measurement outliers. The correct result is as follows: xCENAM = 2.6032 %, UCENAM = 0.0656 % (k = 2.45).
(2) Result from NIST as originally submitted and used for calculation of equivalence.
After disclosure of all results from participants, NIST discovered a calibration error. The correct result is as follows: xNIST = 2.533 %, UNIST = 0.029 % (k = 2).
MEASURAND : Mass fraction of Molybdenum in low alloy steel
xi : result of measurement carried out by laboratory i
ULab i : expanded uncertainty of xi
kLab i : coverage factor, ULab i = kLabi ui , with ui the combined standard uncertainty of xi
| Lab i | xi / % |
ULabi / % |
kLabi |
| BAM | 1.0475 | 0.0136 | 2 |
| CENAM |
1.0325 |
0.0257 |
2.2 |
| CSIR-NML |
1.052 |
0.023 |
2 |
| KRISS |
1.0353 |
0.0034 |
2.04 |
| LGC | 1.035 | 0.014 | 2 |
| NIST | 1.0371 | 0.0056 | 2 |
| NMIJ | 1.0415 | 0.0080 | 2 |
| VNIIM | 1.05 | 0.039 | 2 |
