Stainless Steel 1.4919
EN 1.4919
1.4919 (X6CrNiMoB17-12-2) is a boron-modified 316-type Cr-Ni-Mo austenitic stainless that adds neutron absorption to conventional molybdenum-bearing corrosion resistance.
Reference datasheet — 1.4919 is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the AT condition
1.4919 tempers and conditions
1.4919 is supplied in 5 conditions, soft to hard. AT is the default FabDigit quotes; the values on this page are for it.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
High-temperature solution anneal, coarse grain | Anneal at the upper end (≈1100–1150 °C) to coarsen grain (ASTM 2–5) for maximum creep-rupture strength in long-term 550–650 °C steam service. | 240 | 550 | 45 | 150 HB | 2.3 % IACS |
Hot finished (rolled/forged) and solution annealed | Hot-finished plate, seamless tube and forgings in the annealed, pickled condition — the usual pressure-part supply form. | 265 | 575 | 45 | 165 HB | 2.3 % IACS |
ATDefault Solution annealed | Standard supply condition for tube, plate and forgings — maximum corrosion resistance and ductility, basis of EN creep-rupture data. | 270 | 580 | 48 | 160 HB | 2.3 % IACS |
Cold drawn | Cold-drawn bar or tube for higher yield strength and better surface/tolerance, e.g. high-temperature bolting blanks per EN 10269. | 480 | 700 | 25 | 19 HRC | 2.3 % IACS |
Cold worked, half hard tube/strip | Heavily cold-worked small-diameter tube or strip where strength, not creep life, governs; not used above ~400 °C. | 620 | 850 | 15 | 26 HRC | 2.2 % IACS |
What is 1.4919?
1.4919 (X6CrNiMoB17-12-2) is a boron-modified 316-type Cr-Ni-Mo austenitic stainless that adds neutron absorption to conventional molybdenum-bearing corrosion resistance. It is used for nuclear internals and fuel-handling hardware in solution-annealed plate, bar, hot-finished and cold-drawn sections, with 270 MPa yield, 580 MPa tensile, 48 % elongation, 160 HB and service to 600 °C. Boron raises weld hot-cracking risk and narrows the hot-working range, and the grade is a specialty item with limited stock. Plain 316L (1.4404) is the alternative where neutron absorption is not required. 1.4919 has a density of 7.98 g/cm³ (0.288 lb/in³), heavier than 85% of stainless steel grades. It melts at 1,390°C (2,534 °F). 1.4919 has a yield strength of 270 MPa (39.2 ksi) and a tensile strength of 580 MPa (84.1 ksi) — weaker than 79% of stainless steel grades. Elongation at break is 48% and the elastic modulus is 200 GPa (29 Msi).
What is 1.4919 used for?
- nuclear reactor internals
- spent fuel storage baskets
- neutron shielding components
- chemical process equipment
Advantages
- Tough — resists crack growth — 220 MPa·√m (200.2 ksi·√in), better than 97% of stainless steel grades
- Forms and bends easily — 78/100, better than 90% of stainless steel grades
- Ductile — tolerates forming and impact — 48%, better than 85% of stainless steel grades
Limitations
- Low strength — 270 MPa (39.2 ksi), worse than 79% of stainless steel grades
1.4919 properties
Typical room-temperature values for 1.4919-AT; bars are the position among stainless steel grades.
Physical3
1.4919 has a density of 7.98 g/cm³ (0.288 lb/in³), heavier than 85% of stainless steel grades. It melts at 1,390°C (2,534 °F).
Mechanical16
1.4919 has a yield strength of 270 MPa (39.2 ksi) and a tensile strength of 580 MPa (84.1 ksi) — weaker than 79% of stainless steel grades. Elongation at break is 48% and the elastic modulus is 200 GPa (29 Msi).
Thermal6
1.4919 is rated for continuous service to 600°C (1,112 °F). It conducts heat at 15 W/m·K (8.67 BTU/hr·ft·°F), worse than 59% of stainless steel grades. Thermal expansion is 16 µm/m·K (8.89 µin/in·°F).
Electrical3
1.4919 conducts electricity at 2.3 % IACS, better than 55% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is very good (70/100), better than 68% of stainless steel grades.
Sustainability4
Producing a kilogram of 1.4919 takes about 53 MJ of energy and emits 5 kg of CO₂ — less than 67% of stainless steel grades. Typical recycled content is 60%.
Manufacturability7
1.4919's machinability is fair (40/100, better than 72% of stainless steel grades); weldability very good (72/100); formability very good (78/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the stainless steel family
Yield strength against density for every stainless steel grade FabDigit runs. 1.4919 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 1.4919
Is 1.4919 easy to machine?
Machines like 316 — gummy, work-hardening chip; use rigid setups, positive-rake coated carbide, 40–120 m/min, heavy feed and copious coolant to avoid glazing.
Can 1.4919 be welded?
Weldable by TIG/MIG/SAW with 316L/16-8-2 filler and low heat input; boron increases hot-cracking risk, so keep interpass < 150 °C, minimise restraint and control ferrite in the weld metal.
Can 1.4919 be formed, bent or molded?
Excellent cold formability with high work-hardening — allow extra springback and interstage anneal at 1050–1100 °C; hot work at 1150–1200 °C, finish above 900 °C, then solution anneal and quench.
1.4919 chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| C | 0.04 – 0.08 | 0.06 |
| Si | ≤ 0.75 | 0.4 |
| Mn | ≤ 2 | 1.5 |
| P | ≤ 0.04 | |
| S | ≤ 0.02 | |
| Cr | 16 – 18 | 17 |
| Ni | 12 – 14 | 13 |
| Mo | 2 – 2.5 | 2.25 |
| Bboron addition for grain-boundary strengthening / creep rupture life | 0 – 0.01 | 0 |
| N | ≤ 0.11 | 0.05 |
| Fe | balance |
What surface finishes work on 1.4919?
Pickle and passivate (HNO3/HF) after hot work or welding; electropolishing gives the best surface for steam/nuclear cleanliness. Anodising is not applicable.
Surface treatments FabDigit runs on stainless steel parts — pick them in the quote configurator or call them out on the drawing. Each links to its datasheet in the surface-finish library (thickness, specs, call-out, material verdicts).
Passivation
Organic Coating
Thermal Spray
Equivalent designations
Standards and trade names that resolve to Stainless Steel 1.4919 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- X6CrNiMoB17-12-2
How much does 1.4919 cost?
1.4919 is a premium-cost stainless steel ($$$), cheaper than about 51% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
1.4919 — frequently asked
What is 1.4919 used for?
1.4919 is typically used for nuclear reactor internals, spent fuel storage baskets, neutron shielding components and chemical process equipment. In short: boron-modified 316 variant; neutron absorption with Mo corrosion resistance; nuclear specialty stock.
What is the yield strength of 1.4919?
1.4919 has a typical yield strength of 270 MPa (39.2 ksi) and a tensile strength of 580 MPa (84.1 ksi) — weaker than 79% of stainless steel grades. Strength varies by condition: see the 5 listed tempers.
Is 1.4919 easy to machine?
Not especially — machinability is rated fair (40/100, better than 72% of stainless steel grades). Machines like 316 — gummy, work-hardening chip; use rigid setups, positive-rake coated carbide, 40–120 m/min, heavy feed and copious coolant to avoid glazing.
Can 1.4919 be welded?
Yes — weldability is rated very good (72/100). Weldable by TIG/MIG/SAW with 316L/16-8-2 filler and low heat input; boron increases hot-cracking risk, so keep interpass < 150 °C, minimise restraint and control ferrite in the weld metal.
What surface finishes work on 1.4919?
Pickle and passivate (HNO3/HF) after hot work or welding; electropolishing gives the best surface for steam/nuclear cleanliness. Anodising is not applicable.
Can 1.4919 be formed, bent or molded?
Excellent cold formability with high work-hardening — allow extra springback and interstage anneal at 1050–1100 °C; hot work at 1150–1200 °C, finish above 900 °C, then solution anneal and quench.
What is the maximum service temperature of 1.4919?
1.4919 is rated for continuous use to about 600°C (1,112 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 1.4919-AT and 1.4919 CW-HH?
AT is the default condition — standard supply condition for tube, plate and forgings — maximum corrosion resistance and ductility, basis of EN creep-rupture data. CW-HH: heavily cold-worked small-diameter tube or strip where strength, not creep life, governs; not used above ~400 °C. Yield strength is 270 MPa in AT versus 620 MPa in CW-HH.
How much does 1.4919 cost?
1.4919 is a premium-cost stainless steel ($$$), cheaper than about 51% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- EN 10216-5 Seamless steel tubes for pressure purposes — stainless steel tubes — CEN (2021)
- EN 10222-5 Steel forgings for pressure purposes — martensitic, austenitic and austenitic-ferritic stainless steels — CEN (2017)
- EN 10269 Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties — CEN (2013)
- EN 10302 Creep resisting steels, nickel and cobalt alloys — CEN (2008)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels and High-Performance Alloys — ASM International (1990)
- ASM Handbook Vol.13B — Corrosion: Materials — ASM International (2005)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.