Laboratory accredited by GAZ, (Association for the Accreditation and Certification GmbH) Attestation no. 91021

CERTIFIED REFERENCE MATERIAL
SE21-40
unalloyed steel

Version: 004      Date of certification: 03.09.07      Sample form: Milling 0.200-1.400 mm

Analyte Unit Certified value Confidence
interval (95%)		 No. of independent
repeated series		 Measuring
method*		 
  C
  Si
  Mn
  P
  S
 
  %
  %
  %
  %
  %
 
      0.0362
      0.0091
      0.2912
      0.0069
      0.0127
 
      0.0002
      0.0003
      0.0019
      0.0001
      0.0002
 
 5
 5
 5
 5
 5
 
1
2
2
3
4
 
  Cr
  Mo
  Ni
  Al lösl.
  As
 
  %
  %
  %
  %
  %
 
      0.0075
      0.0018
      0.0240
      0.0300
      0.0035
 
    < 0.0001
    < 0.0001
    < 0.0001
      0.0001
    < 0.0001
 
 5
 5
 5
 5
 5
 
2
2
2
2
3
 
  Co
  Cu
  Pb
  Sn
  V
 
  %
  %
  %
  %
  %
 
      0.0048
      0.0098
      0.0001
      0.0005
    < 0.002
 
    < 0.0001
    < 0.0001
    < 0.0001
      0.0001
      -.-
 
 5
 5
 3
 4
 5
 
2
2
2
2
2
 
  Ca
  Sb
  Zn
 
  %
  %
  %
 
      0.0001
      0.0007
      0.0012
 
    < 0.0001
      0.0001
    < 0.0001
 
 5
 5
 4
 
2
2
2
* Measuring method
1: Combustion with coulometric detection
2: Atomic absorption spectrometry
3: Photometry
4: Combustion with IR-detection