Description
This ASTM F91 / P91 Alloy Steel Certified Reference Material (CRM) is designed for verifying the accuracy and performance of handheld XRF analyzers, optical emission spectrometers (OES), and other elemental analysis instruments. Featuring a certified Grade 91 chromium-molybdenum-vanadium (Cr-Mo-V) steel composition, this reference material supports positive material identification (PMI), alloy verification, quality control, and laboratory testing.
Ideal for industrial inspection companies, power generation facilities, refineries, piping fabricators, pressure vessel manufacturers, and testing laboratories, this CRM provides a reliable reference for verifying Grade 91 alloy chemistry, checking instrument performance, and supporting material traceability requirements.
Common Applications
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Handheld XRF Verification: Check analyzer performance using known concentrations of chromium (Cr), molybdenum (Mo), vanadium (V), nickel (Ni), manganese (Mn), and other detectable alloying elements.
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Positive Material Identification (PMI): Support verification of F91 and P91 alloy steel used in high-temperature piping, pressure vessels, valves, fittings, and industrial components.
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Chrome-Moly Steel Sorting: Verify instrument response when distinguishing Grade 91 steel from other chromium-molybdenum alloys, including F11/P11, F22/P22, and F9/P9.
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Manufacturing QA/QC: Perform routine instrument verification during incoming material inspection, fabrication, welding operations, and final quality control.
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Power Generation & Petrochemical Inspection: Support alloy identification programs for boiler piping, steam systems, refineries, and other elevated-temperature industrial applications.
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Laboratory Analysis: Use as a reference material for compatible XRF, spark-OES, and other elemental analysis methods.
Certified ASTM F91 / P91 Alloy Steel Chemical Composition
The following chemical composition represents the certified values for the supplied Grade 91 alloy steel reference material.
| Element | Certified Composition (wt. %) |
|---|---|
| Iron (Fe) | 88.9% |
| Chromium (Cr) | 8.75% |
| Molybdenum (Mo) | 0.95% |
| Manganese (Mn) | 0.465% |
| Silicon (Si) | 0.34% |
| Vanadium (V) | 0.216% |
| Nickel (Ni) | 0.152% |
| Carbon (C) | 0.113% |
| Copper (Cu) | 0.091% |
| Niobium (Nb) | 0.074% |
| Nitrogen (N) | 0.034% |
| Aluminum (Al) | 0.0186% |
| Cobalt (Co) | 0.0136% |
| Phosphorus (P) | 0.0133% |
| Arsenic (As) | 0.0065% |
| Tin (Sn) | 0.0060% |
| Sulfur (S) | 0.0040% |
| Oxygen (O) | 0.0024% |
| Tungsten (W) | 0.0024% |
| Titanium (Ti) | 0.0023% |
Certified values are reported in weight percent. Refer to the Certificate of Analysis for measurement uncertainties, additional informational values, and complete certification details.
View / Download Certificate of Analysis (BS 9905a)
Other Names for ASTM F91 / P91 Alloy Steel
ASTM A182 Grade F91, ASTM A335 Grade P91, UNS K90901, Grade 91 Steel, 9Cr-1Mo-V Steel, Modified 9Cr-1Mo Steel, 9 Chrome-1 Moly Steel, F91 Chrome-Moly Steel, P91 Chrome-Moly Steel, Chromium-Molybdenum-Vanadium Alloy Steel.
Available material forms
- OES - Disc: 38mm D x 19mm
- XRF - Disc: 38mm D x 7mm