F51
F51
General
F51 IS A DUPLEX STAINLESS STEEL WITH APPROXIMATELY 22% CHROMIUM, 5.5% NICKEL, AND 3% MOLYBDENUM. ITS DUAL-PHASE MICROSTRUCTURE—50% AUSTENITE AND 50% FERRITE—DELIVERS HIGH STRENGTH, EXCELLENT RESISTANCE TO PITTING, CREVICE CORROSION, AND STRESS CORROSION CRACKING, ESPECIALLY IN CHLORIDE-RICH AND AGGRESSIVE ENVIRONMENTS. THIS BALANCE OF MECHANICAL STRENGTH AND CORROSION RESISTANCE MAKES F51 IDEAL FOR DEMANDING APPLICATIONS IN THE OIL & GAS, CHEMICAL, POWER GENERATION, MARINE, AND BREWING INDUSTRIES.
Uses
PROPELLER SHAFTS, VALVES & PUMPS, FLANGES, BOLTING, PRESSURE VESSEL PARTS, COMPRESSOR PARTS, HEAT EXCHANGERS, REFINERIES, POWER GENERATION, CHEMICAL TANKS.
Heat Treatment & Condition
CONDITION A
Chemical Analysis
C
·
0.03 MAX
Si
·
1.00
P
·
0.03 MAX
Mn
·
2.00
S
·
0.02 MAX
Cr
·
21.00/23.00
Mo
·
2.50/3.50
| C | Si | P | Mn | S | Cr | Mo |
|---|---|---|---|---|---|---|
| 0.03 MAX | 1.00 | 0.03 MAX | 2.00 | 0.02 MAX | 21.00/23.00 | 2.50/3.50 |
Typical Mechanical Properties (EXAMPLE ONLY)
TEN. STRENGTH
621 MPa MIN
PROOF STRESS 0.2%
450 MPa MIN
ELONG.
25%
HARDNESS
264 HB
| TEN. STRENGTH | PROOF STRESS 0.2% | ELONG. | HARDNESS |
|---|---|---|---|
| 621 MPa MIN | 450 MPa MIN | 25% | 264 HB |