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This 303Se certified reference material is an austenitic stainless steel alloy widely used as a standard for calibrating and verifying your spectrometer (XRF, ICP-OES, Spark-OES, etc.). This material is precisely manufactured and certified to have traceable measurements and specified impurity levels, ensuring reliable results for laboratories performing calibration, quality control, and materials testing.
| Element | Composition |
| Fe | Balance |
| Al | 0.004% |
| As | 0.0052% |
| B | 0.0007% |
| C | 0.051% |
| Cr | 17.64% |
| Co | 0.145% |
| Cu | 0.44% |
| Mn | 1.61% |
| Mo | 0.59% |
| Ni | 9.11% |
| Nb | 0.021% |
| N | 0.031% |
| O | 0.007% |
| P | 0.13% |
| Se | 0.13% |
| Si | 0.46% |
| S | 0.011% |
| Sn | 0.012% |
| Ti | 0.0027% |
| W | 0.05% |
| V | 0.092% |
| Element | 304L Composition |
| Fe | Balance |
| Cr | 17-19% |
| Ni | 8-10% |
| Mn | 2% max |
| Si | 1% max |
| P | 0.2% max |
| C | 0.15% max |
| Se | 0.15% min |
| S | 0.06% max |
AISI 303Se, UNS S30323, 18-8 with Sulfur, 18/8 with Sulfur, high sulfur stainless steel, AMS 5640 (Type 2), ASTM A194, ASTM A581, ASTM A276, AMS 5641, ASTM A194 Grade 8F, ASTM A582, ASME SA320, AMS 5738, ASTM A314, MIL SPEC MIL-S-862, ASTM A473, ASME SA194, ASTM A320, SAE 30303Se, SAE J405
A reference material, or RM, is a material with a known grade and/or chemical composition that is typically used for alloy or grade identification.
A certified reference material, or CRM, is a material that has been thoroughly analyzed and characterized using multiple validated methods to determine its chemical composition. The results of these analyses are then used to establish certified values, along with associated uncertainties. CRMs are produced and certified by accredited organizations or laboratories following internationally recognized standards, such as ISO Guide 34 (ISO 17034).
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