Description
Alloy F11, also referred to as 1 1/4 Cr 1/2 Mo, is a chromium-molybdenum steel used in high-temperature service, including boiler, steam, petrochemical, and power-generation applications. It is covered under the ASTM A335 (seamless ferritic alloy-steel pipe for high-temperature service) and corresponding flange/fitting standards such as ASME/ASTM A182 F11 and ASTM A234 WP11.
F11 Certified Chemical Composition:
| Element | Composition |
| Al | 0.018% |
| Sb | 0.0017% |
| As | 0.0048% |
| B | 0.0004% |
| C | 0.114% |
| Cr | 1.349% |
| Co | 0.0062% |
| Cu | 0.123% |
| Mn | 0.530% |
| Mo | 0.614% |
| Ni | 0.069% |
| P | 0.0067% |
| Si | 0.679% |
| S | 0.0141% |
| Sn | 0.0084% |
| Ti | 0.0015% |
| V | 0.0038% |
Industry Chemical Range: F11 / 1.25Cr 0.5Mo
|
Grade |
UNS |
Chemical Composition % |
||||||
|
F11 or 1.25Cr 0.5Mo |
K11572 |
C |
Cr |
Mn | Mo | P | S | Si |
|
0.05-0.15% |
1.0-1.5% |
0.30-0.60% | 0.44-0.65% | 0.030-0.040% | 0.040% max | 0.50-1.00% | ||
Other names for F11:
P11, WP11, 1.25Cr0.5Mo, UNS K11572
Available material forms:
- XRF: 1/8" thick disc, 1.5" diameter
- OES: 0.75" thick disc, 1.5" diameter
- Chips: 100g of chips
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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