Certified reference material for 904L stainless steel (UNS N08904), intended for XRF and spark OES calibration, verification, and quality control.

The 904L Stainless Steel CRM is designed for XRF and spark optical emission spectroscopy (OES) applications where accurate verification of high-nickel, high-molybdenum austenitic stainless steel chemistry is required.

This alloy is widely known for its excellent corrosion resistance, particularly in aggressive environments, and has been used in applications ranging from chemical processing equipment to high-end watch manufacturing. Notably, 904L stainless steel is commonly associated with Rolex watches, where it is valued for its corrosion resistance, polishability, and long-term durability.

This reference material supports reliable measurement of key alloying elements such as chromium, nickel, molybdenum, copper, and manganese, along with supporting minor and trace elements that define 904L chemistry. It is well suited for routine analyzer checks, method validation, and ongoing QA/QC in both handheld and laboratory environments.

The CRM is supplied as a solid metallic disc, providing a stable and repeatable surface for XRF and OES analysis.

904L Certified Chemical Composition

Values enclosed in parentheses ( ) are provided for reference purposes only. These values are not certified and should not be used for calibration where certified values are required. 

Intended Use (XRF & OES Only)

• Handheld and benchtop XRF analyzer verification
• Spark OES calibration and performance checks
• Confirmation of 904L stainless steel chemistry
• Routine quality control and method validation

Material Details

• Alloy: 904L Stainless Steel
• UNS: N08904
• Form Solid disc
  • XRF 38 mm diameter × 3 mm thick
    
  • OES 38 mm diameter x 19 mm thick
• Usable Area: Entire depth suitable for analysis

XRF & OES Notes

• Major alloying elements (Cr, Ni, Mo, Cu, Mn) are readily measurable by XRF and spark OES
• Carbon (C) and Nitrogen (N) are included for full alloy context but are not measurable by handheld XRF
• High-nickel alloys like 904L are best verified using handheld XRF or laboratory OES systems

What’s Included

• 904L Stainless Steel Certified Reference Material
• Certificate of Analysis with certified values and uncertainty
  

Frequently Asked Questions

What is this reference material used for?
This CRM is used for calibration, verification, and quality control of XRF and spark OES analyzers when analyzing 904L stainless steel.

Is this suitable for handheld XRF analyzers?
Yes. Chromium, nickel, molybdenum, copper, and manganese in 904L are well suited for verification using  handheld XRF analyzers.

Can this be used for spark OES?
Yes. The solid disc form and certified homogeneity make it suitable for spark OES calibration and performance checks.

Does this include carbon and nitrogen?
Yes. Carbon and nitrogen are included to represent full alloy chemistry, but they are not measurable by handheld XRF and are primarily relevant for OES users.

Is this supplied as chips or solid form?
This CRM is supplied only as a solid disc for repeatable XRF and OES analysis.