Description
4820 Nickel Steel Certified Reference Material (CRM)
This AISI 4820 certified reference material is a nickel steel 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 4820 Steel Chemical Composition:
| Element | Composition 1 | Composition 2 |
| Al | 0.0356% | 0.022% |
| As | 0.006% | 0.006% |
| C | 0.199% | 0.192% |
| Co | 0.012% | 0.0107% |
| Cr | 0.144% | 0.144% |
| Cu | 0.219% | 0.167% |
| Mn | 0.617% | 0.541% |
| Mo | 0.244% | 0.287% |
| N | 0.005% | 0.007% |
| Nb | 0.0016% | 0.002% |
| Ni | 3.36% | 3.51% |
| O | 0.003% | 0.003% |
| P | 0.008% | 0.011% |
| S | 0.013% | 0.018% |
| Si | 0.223% | 0.26% |
| Sn | 0.0084% | 0.0089% |
| Ti | 0.0020% | 0.0011% |
| V | 0.0015% | 0.0015% |
| W | 0.004% | 0.004% |
4820 Chemical Range:
| Element | Composition |
| Fe | Balance |
| C | 0.18-0.23% |
| Ni | 3.25-3.75% |
| Mn | 0.5-0.7% |
| Mo | 0.2-0.3% |
| Si | 0.15-0.30% |
| S | 0.040% max |
| P | 0.035% max |
Other Names:
Nickel Steel 4820, AISI 4820, UNS G48200, ASTM A29, ASTM A322, ASTM A331, ASTM A535, ASTM A572, SAE J1397, SAE J404, SAE J412, SAE J770
Available material forms:
- XRF:
- Composition 1: ~1/8" thick disc, ~1.5" diameter
- Composition 2: ~1/8" thick disc, ~1.5" diameter
- OES:
- Composition 1: ~3/4" thick disc, ~1.5" diameter
- Composition 2: ~3/4" thick disc, ~1.5" diameter
- Chips:
- Composition 1: 50g of chips
- Composition 2: 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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