Nitronic50 S20910 Stainless Steel Round Bar Nickel Alloy XM-19 For Construction
MATERIAL DESCRIPTION
NITRONIC® 50 is manganese alloyed austenitic stainless steel with improved corrosion resistance compared to 316L and 317L due to increased chromium content plus about twice the yield strength of the same at room temperature. Unlike many austenitic alloys, NITRONIC® 50 does not become magnetic when cold formed. NITRONIC® 50 Stainless has very good mechanical properties at both elevated and sub-zero temperatures.
CHEMICAL COMPOSITION
| WEIGHT% | C | SI | MN | S | P | CR | NI | MO | NB | V | N |
| MIN. | 4,00 | 20,50 | 11,50 | 1,50 | 0,10 | 0,10 | 0,20 | ||||
| MAX. | 0,06 | 1,00 | 6,00 | 0,030 | 0,040 | 23,50 | 13,50 | 3,00 | 0,30 | 0,30 | 0,40 |
PRODUCT STANDARDS: ASTM A276, ASTM A479
APPROVALS: NACE MR0175
APPLICATIONS
The combination of corrosion resistance and mechanical strength is utilized in marine hardware,
pump shafting, petrochemical, pulp & paper, food processing and petroleum industries. Can also be
used in “down hole” applications due to sulfide stress cracking resistance.
Field service experience have shown that NITRONIC® 50 stainless has excellent resistance to sulfide
stress cracking in air conditions. NITRONIC® 50 in both the annealed and high-strength (hot rolled)
conditions has been included in NACE Standard MR01-75/ ISO 15156-3 “Sulfide Stress Cracking
Resistant Metallic Material for Oil Field Equipment,” at hardness levels up to HRc 35 maximum.
MECHANICAL PROPERTIES
| YIELD STRENGTH RP0.2 MPA |
TENSILE STRENGTH RM MPA |
ELONGATION [%] |
HARDNESS [HB] |
IMPACT CHARPY-V, 20ºC [J] |
|
| BAR | ≥ 345 | ≥ 655 | ≥ 35 | ≤ 293 | 230 |
| TYPICAL | 420 | 730 | 50 | 201 |
HEAT TREATMENT
Annealed, for most applications, the 1066°C condition should be selected, as it provides a higher level of mechanical properties along with excellent corrosion resistance. A high strength version can also be supplied with min. yield at 585MPa.
UNS S20910 / NITRONIC® 50 ROUND BAR
| DESCRIPTION | KG/M |
| 25,4 mm | 4.4 |
| 36 mm | 8. |
| 38,1 mm | 9.2 |
| 45 mm | 12.8 |
| 76,2 mm | 36.8 |
| 101,6 mm | 65.1 |
| 140 mm | 123.5 |
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