Blast Furnace Iron Block
CRM Category: Cast Irons
Material Form: 48 x 42 x 12mm Block
Commodity: Alloys
Type: Certified Reference Material
Product Code: SCRM 674/1
Chemical Content
| Element | Mass Fraction in % | Uncertainty in Mass Fraction in % |
|---|---|---|
| Si | 0.00007 | 0.00006 |
| Fe | 0.00007 | 0.00006 |
| Cu | 0.00007 | 0.00006 |
| Mn | 0.00007 | 0.00006 |
| Mg | 0.00007 | 0.00006 |
| Cr | 0.00007 | 0.00006 |
| Ni | 0.00007 | 0.00006 |
| Zn | 0.00007 | 0.00006 |
| Ti | 0.00007 | 0.00006 |
| Ag | 0.00007 | 0.00006 |
Properties
- Density
- 6.99g/cm³
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Product Description
The material for this SCRM was prepared by Replicast Ltd. at Sheffield, U.K using a special method of casting known to provide material of uniform composition in a form suitable for use as a Certified Reference Material (CRM) for optical emission spectrometric analysis. Blocks from this cast have been shown, by statistically designed procedures, to provide reproducible results using optical emission spectrometry. SCRM 674/1 is sold in the form of chill cast rectangular blocks, each approximately 48mm x 42mm x 12mm thick with a single chilled working face. Spectroscopic reproducibility has been shown to be reliable to a depth of 5mm below the original surface of this block. Sparking must be made on the fully ground surface only and the sample should be discarded when this face has been ground back as far as the small shoulder around the edge of the sample. The preparation of representative samples for chemical analysis and the certification by co-operative analysis was undertaken by Bureau of Analysed Samples Ltd. Bureau of Analysed Samples Ltd is a United Kingdom Accreditation Service (UKAS) Accredited Reference Material Producer, No 4004, and, as the Producer of SCRM 674/1 as defined in ISO Guide 34:2009 section 3.1, is fully responsible for assigning the certified values and their uncertainties in accordance with ISO Guides 34:2009 and 35:2006.
Notes on methods used
- CARBON
- Analysts Nos. 1, 2, 4 and 5 determined carbon by high frequency combustion and infrared absorption. Analysts Nos. 3 and 6 determined carbon using non-aqueous titration according to the Standard Method BS 6200:3.8.2:1991.
- SILICON
- Analyst No. 1 determined silicon photometrically as silicophosphomolybdate without extraction. Nos. 2 and 6 determined silicon gravimetrically, according to BS 6200:3.26.1:1995. Nos. 3, 4 and 5 used inductively coupled plasma optical emission spectrometry (ICP-OES).
- MANGANESE
- Analysts Nos. 1, 2, 4 and 5 used ICP-OES. Nos. 3 and 6 determined manganese photometrically after oxidation with potassium periodate according to BS 6200:3.18.2:1995.
- PHOSPHORUS
- Analysts Nos. 1, 2, 4 and 5 used ICP-OES. Nos. 3 and 6 determined manganese photometrically after oxidation with potassium periodate according to BS 6200:3.18.2:1995
- SULPHUR
- Analyst Nos.1, 2, 4 and 5 determined sulphur using high frequency combustion and infrared absorption. Analyst No. 6 determined sulphur using oxidation/reduction titration after combustion.
- CHROMIUM
- Analysts Nos. 1, 2, 3, 4 and 5 determined chromium using ICP-OES. Analyst No.6 used flame atomic absorption spectrometry (FAAS).
- MOLYBDENUM
- Analysts Nos. 1, 2, 4 and 5 determined molybdenum using ICP-OES. Analyst No. 6 used FAAS
- NICKEL
- Analysts Nos. 1, 2, 3, 4 and 5 determined nickel using ICP-OES. Analyst No.6 used FAAS.
- ALUMINIUM
- Analysts Nos. 1, 2, 3, 4 and 5 determined aluminium using ICP-OES. Analyst No.6 used FAAS, according to BS6200: 3.1.4:1990.
- ARSENIC
- Analysts Nos. 1, 2, 4 and 5 determined arsenic using ICP-OES. Analyst No.6 determined As photometrically with silver diethyldithiocarbamate after separation as arsine
- COBALT
- All Analysts determined cobalt by ICP-OES
- COPPER
- Analysts Nos. 1, 2, 3, 4 and 5 determined copper using ICP-OES. Analyst No.6 used FAAS according to BS EN 24943:1990.
- NITROGEN
- Analysts Nos. 1, 2, 4 and 5 determined nitrogen using thermal conductivity. Analyst No.6 determined nitrogen titrimetrically after distillation as ammonia according to the Standard Method BS 6200:3.22.1:1992.
- TIN
- All analysts determined tin using ICP-OES.
- TITANIUM
- All Analysts determined titanium using ICP-OES.
- VANADIUM
- All Analysts determined vanadium by ICP-OES
- NIOBIUM
- All Analysts determined niobium using ICP-OES.
- CALCIUM
- Analyst No. 1 determined calcium using ICP-OES. Analysts Nos. 4 and 6 used FAAS.
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