Description
440C Martensitic Stainless Steel Certified Reference Material (CRM)
This AISI 440C certified reference material is a 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.
Certified 440C Stainless Steel Chemical Composition:
| Element | Composition |
| Fe | Balance |
| C | 1.040% |
| Cr | 16.36% |
| Ni | 0.256% |
| Mn | 0.697% |
| Si | 0.614% |
| P | 0.0195% |
| S | 0.0012% |
| Al | 0.006% |
| As | 0.008% |
| B | 0.0005% |
| Co | 0.0212% |
| Cu | 0.184% |
| Mo | 0.488% |
| N | 0.0495% |
| Nb | 0.0074% |
| O | 0.0031% |
| Sb | 0.0027% |
| Sn | 0.011% |
| Ta | 0.004% |
| Ti | 0.0035% |
| V | 0.058% |
| W | 0.046% |
| Zr | 0.0017% |
440C Chemical Range:
| Element | Composition |
| Fe | Balance |
| C | 1.1% |
| Cr | 17% |
| Mn | 1% |
| Si | 1% |
| Mo | 0.75% |
Other Names:
Stainless Steel 440C, UNS S44004, AISI 440C, EN 1.4125, JIS SUS440C, ASTM A276, ASTM A580, AMS 5630
Available material forms:
- XRF: ~1/8" thick disc, ~1.5" diameter
- OES: ~0.75" thick disc, ~1.5" diameter
- Chips: 50g of chips
Reference Material (RM):
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.
Certified Reference Material (CRM):
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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