Analytical Reference Materials International

Certificate of Analysis
Certified Reference Material
Grade: AISI 310 / UNS S31000
Part Number (Q.A. NO.): IARM 4C
Certification Date: 06/19/2003 Certificate No.: 4C-06192003-IARM-F Revision Date: 03/30/2004

Interpretation of Data
1. Certified values listed below reflect analysis results submitted by qualified analytical laboratories using a combination of methods and instrumentation
that emulate actual methods and instrumental techniques currently utilized in the analytical community.
2. Any data reported and enclosed by a parentheses ( ) is a "best estimate" and is NOT CERTIFIED. This data could not be quantified sufficiently for
certification. It was however, reported by enough laboratories to be considered as potentially present in the matrix of the material being examined.
3. The "Inter-laboratory Analysis Program" (ILAP) utilized in the establishment of the data are an ongoing program with permanent membership. Certain
elements may be selected by a consensus of the members for more extensive testing. Therefore the data in brackets [ ] indicates further testing is in
process.
4. The "±Estimated Uncertainty" is enclosed by a parentheses ( ) below the individual element's concentration and is based on a Confidence Interval
at 95%. Included in this estimated uncertainty, are the combined effects of method imprecision, material inhomogeneity, and any bias between methods.
Important: A "User Registration Card" accompanies all shipments. This card should be completed immediately upon receipt of materials with the
appropriate user information. This is the only way in which ARMI can guarantee customer updates or possible data modifications!

Aluminum Boron Carbon Cobalt Chromium Copper Manganese

0.01 0.0003 0.064 0.098 23.95 0.230 1.69
(0.002) (0.0002) (0.001) (0.004) (0.05) (0.004) (0.01)
Molybdenum Nitrogen Niobium Nickel Oxygen Phosphorus Sulfur
0.224 0.039 0.013 19.3 0.0054 0.029 0.0017
(0.003) (0.001) (0.001) (0.1) (0.0005) (0.001) (0.0002)
Silicon Tantalum Tin Titanium Vanadium Tungsten Zirconium
0.454 0.007 0.003 0.078 0.024
(0.005) (0.001) (0.001) (0.001) (0.003)
The laboratories participating in the "Inter-Laboratory Analysis Program" (ILAP) and certification of this material are as follows:
AK Steel - Middletown, OH Allegheny Ludlum Corp. - Brackenridge, PA
Allvac - Monroe, NC Anderson Laboratories, Inc. - Greendale, WI
Carpenter Technology Corporation - Reading, PA Crucible Specialty Metals - Syracuse, NY
IMR Test Labs - Lansing, NY Laboratory Testing, Inc. - Hatfield, PA
MetalTek International, Inc. - Waukesha, WI Special Metals Corporation - Huntington, WV
The Timken Company - Canton, OH Timken Latrobe Steel Co. - Latrobe, PA

Traceability: All members of the "Inter-Laboratory Analysis Program" (ILAP) listed above validate test methods and instrument performance utilizing
SRMs produced by the National Institute of Standards and Technology, (NIST) as well as other CRMs and RMs produced by recognized Certifying Bodies
from around the world. The specific SRMs, CRMs, and RMs applicable to the material covered by this certificate are: 871745, NIST 13G, 15G, 19G, 73C,
133B, 849, 850, C1151A, 1152A, 1153A, C1154, 1154A, 1155, 1156, 1172, 1233, 1267, 2167, 2168, IARM 2D, 4B, 8B, 9B, 234A, BS 303, LECO 501-
643, 501-644, NIST 362, BS 83H, 182, IC 55283, 56454, IARM 4B, 27C, LECO 501-647, NIST C1287, 121D, NIST 339, 341, 348, BS 9841, LECO 501-
553, 501-551, NIST 885, C1287, 2166, 2171, 3103A, 3113, 3155, 3163, 3169, IARM 4A, 4B, LECO 501-501, 501-553, 501-503, NIST 1760, 1761, 1762,
1763, 1764, 1765, 1766, 1767, 337A, C1151, C1152, C1153, C1154, C1287, 1171, 1172, 1754, 1160, 1161, 1162, 1163, 1164, 1261A, JSS 168-4, 169-4,
170-4, 171-4, 172-4, 173-4, 174-4, 175-4, ST01, ST02, ST03, ST04, ST05, ST06, BAS SS401/1, 402/1, 403/1, 404/1, 405/1, 406/1, 407/1, 408/2, 409/1,
410/2, L469, 470, 471, 472, 473, 474, 475, LECO 501-510, 501-645, BS 14, 14B, XEEH, XAAS, XCCV, XCCS, CA-1, CA-2, CA-3, CA-4, CA-1A, CA-
3A, IARM 4A, 4B, LECO 501-553, BS 83C, 83D, NIST 3107, 3155, 3161A, IARM 10B, 13B, 9B, 154A, 2A, 2B, 1A, 6A, 6B, 8A, 8B, BS 89D, 89E, 17-
5A, 17-4PHB, 9941, 9942, 317L, LECO 501-504, 501-502, 501-676, 501-674, 501-647, 501-644, 501-643, 501-646, NIST 131G, 1606, HAS 330B, 400T,
400M, 600C, 600T, 805B, 902B, 25-6A, REF 310B, LECO 502-256, 501-550, IARM 4B
A specific line of traceability is established to NIST and other Certifying Bodies for those elements that are noted as "Certified Values" on the Certificates of
Analyses referenced above.

See Reverse Side for Statistical Data and Additional Information Regarding this Material.

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The following data and accompanying statements represent all pertinent information reported in the ILAP as it
applies to the chemical characterization of this material as of 03/30/2004.
4C Al B C Co Cr Cu Mn Mo N Nb Ni O P S Se
1 0.002 0.0004 0.060 0.100 23.79 0.240 1.70 0.230 0.0410 0.013 19.44 0.0049 0.030 0.0020 <0.0001
2 0.0056 0.0002 0.065 0.087 24.00 0.230 1.69 0.228 0.038 0.0133 19.30 0.0055 0.028 0.0013 <0.001
3 0.0094 0.0004 0.0653 0.090 23.958 0.239 1.70 0.220 0.038 0.012 19.41 0.0054 0.027 0.0017 0.00004
4 0.0065 0.00010 0.0627 0.094 23.854 0.224 1.685 0.2247 0.0379 0.0117 19.333 0.0041 0.0286 0.0020
5 0.0070 0.0002 0.0624 0.1046 23.86 0.2325 1.715 0.230 0.0390 0.013 19.321 0.0053 0.0316 0.00198
6 0.002 0.000133 0.0660 0.105 24.00 0.226 1.66 0.225 0.0368 0.011 19.29 0.0050 0.0273 0.0019
7 0.0054 0.0004 0.0642 0.099 24.030 0.241 1.68 0.220 0.0382 0.0123 19.14 0.00493 0.0305 0.0020
8 0.0097 0.0007 0.065 0.090 23.91 0.223 1.660 0.219 0.0394 0.014017 19.200 0.00575 0.029 0.0022
9 0.010 0.0005 0.064 0.094 23.98 0.240 1.678 0.226 0.0399 0.012 19.242 0.0066 0.0310 0.0014
10 0.0033 0.066 0.098 23.97317 0.236 1.705 0.219333 0.0393 0.012 19.25 0.0064 0.0284 0.0014
11 0.0101 0.0645 0.103 23.981 0.227083 1.6844 0.229 0.0394 0.0139 19.18017 0.0303 0.0016
12 0.062 0.095 23.96 0.218 1.674 0.218 0.0395 19.176 0.0286 0.0013
13 0.062 0.100 24.10 0.226 1.69 0.0411 19.30 0.025 0.0019
14 0.0632 0.1072 0.2239 0.0365 19.12 0.0263

Mean 0.0065 0.0003 0.0637 0.0976 23.9536 0.2305 1.6863 0.2241 0.0389 0.0126 19.2644 0.0054 0.0287 0.0017 0.0000
STDV. 0.0031 0.0002 0.0018 0.0062 0.0821 0.0076 0.0164 0.0046 0.0014 0.0010 0.0958 0.0007 0.0019 0.0003
Certified 0.01 0.0003 0.064 0.098 23.95 0.230 1.69 0.224 0.039 0.013 19.3 0.0054 0.029 0.0017
95% C.I. 0.002 0.0002 0.001 0.004 0.05 0.004 0.01 0.003 0.001 0.001 0.1 0.0005 0.001 0.0002
Methods A,I,O D,I,O C,O X,A,I,O X,W,O X,A,I,O X,A,I,O X,A,I,O F,O X,I,O X,I,O F X,I,O C,O
Methods: W = Classical, C = Combustion, F = Fusion, A = AA or GFAA, I = ICP or DCP, D = DC Arc, O = OE, X = XRF, G=GDMS
4C Si Sn Ta Ti V W Ag As Bi Ca H Mg Pb Te Zr
1 0.470 0.010 0.002 0.002 0.081 0.033 0.0001 0.0026 0.0002 0.0011 0.0033 0.0001 <0.0001 0.0008
2 0.440 0.0054 0.0278 0.002 0.078 0.022 <0.0001 0.0016 <0.001 0.0010 <0.001 0.0006 <0.0001 0.003
3 0.454 0.0087 <0.01 0.0030 0.0784 0.0207 0.0027 <0.00001 0.0014 0.0004 0.0002 0.001
4 0.449 0.007 <0.001 0.002 0.076 0.019 0.001 0.001 0.00003 0.0003
5 0.450 0.0059 <0.001 0.0039 0.080 0.0213 0.0042 0.0018
6 0.455 0.006 0.001 0.0036 0.077 0.032
7 0.454 0.0077 0.048467 0.0046 0.079 0.018
8 0.444 0.0045 <0.0001 0.078 0.026
9 0.463 0.005667 0.0257 0.079833 0.024333
10 0.450 0.0090 0.075 0.019
11 0.46203 0.0065 0.079 0.022
12 0.451 0.0260
13 0.4554
14

Mean 0.4536 0.0069 0.0210 0.0030 0.0783 0.0236 0.0001 0.0024 0.0002 0.0013 0.0019 0.0002 0.0013
STDV. 0.0080 0.0017 0.0199 0.0011 0.0018 0.0049 0.0012 0.0003 0.0021 0.0003 0.0012
Certified 0.454 0.007 0.003 0.078 0.024 (0.002) (0.001) (0.0002) (0.001)
95% C.I. 0.005 0.001 0.001 0.001 0.003
Methods X,W,A,O X,A,I,O X,O X,A,I,O X,I,O A,I,O X,I,O D,A,I X,I
Methods: W = Classical, C = Combustion, F = Fusion, A = AA or GFAA, I = ICP or DCP, D = DC Arc, O = OE, X = XRF, G=GDMS

The International Standards Organization (ISO) definitions, expressed in ISO Guide 30-1981-(E) list the following:
Certifying Body: A technically competent body (organization or firm, public or private) that issues a Reference Material Certificate. The only generally
accepted certifying body in the United States is the U. S. Department of Commerce, National Institute of Standards & Technology, (NIST), Gaithersburg,
MD.
Reference Material (RM): A material or substance with one or more properties which are sufficiently well established to be used for calibration of an
apparatus, the assessment of a measurement method, or for assigning values to materials.
Certified Reference Material (CRM): A reference material with one or more properties whose values are certified by a technically valid procedure
accompanied by or traceable to a certificate or other documentation, which is issued by a Certifying Body.

Inter-Laboratory Analysis Program (ILAP): Although ASTM Standard E691-87 applies to inter-laboratory studies to "Determine the Precision of a
Single Test Method", it is also a well thought out and logical plan for conducting an inter-laboratory program involving multiple techniques. Therefore, the
planning, conducting, analyzing, protocol, and treatment of data resulting from this inter-laboratory program were performed utilizing the guidelines
established in ASTM E691-87.
Methods of Analysis: In view of the fact, that the "Inter-Laboratory Analysis Program" entails a wide variety of materials, no single analytical method
would provide optimum data results. Therefore, the methods utilized were a combination of ASTM Standard Methods for classical wet chemistry, ICP, AA,
Optical Emission and X-Ray spectrometric methods. The determinations for Carbon, Sulfur, Nitrogen, and Oxygen are the result of combustion instrument
procedures.
Selection of Materials: A "batch" or "series" is defined as a single bar of one continuous length. The majority of materials are in wrought condition.
Other methods of manufacture are utilized as a last resort, only in the case of those materials being unavailable in wrought condition. "Batch" samples are
taken by removing a one-inch cross section for every thirteen inches of total length from the entire bar. Twenty-five percent of the one inch cross section is
converted to chips for analysis by classical wet chemistry, ICP, AA, and combustion procedures and seventy-five percent remains in a solid disk form for
OES and X-Ray analysis where applicable. Each member of the ILAP is furnished both a solid sample and the corresponding supply of chips from a
specific location on the batch bar. This massive sampling procedure results in the homogeneity being reflected as a product of the overall statistics and
certified data.

Certified by: Certificate No.: 4C-06192003-ARM-F

William D. Britt, President/General Manager Certification Date: 06/19/2003
Analytical Reference Materials International Revision Date/No.: 03/30/2004