Steel ER80S-B3L
UNS K30560
ER80S-B3L (K30560) is a low-carbon version of the 2.25Cr-1Mo solid filler wire, matched to P22 base metal within the low-alloy steel consumable family.
Reference datasheet — ER80S-B3L 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 PWHT-690 condition
ER80S-B3L tempers and conditions
ER80S-B3L is supplied in 3 conditions, soft to hard. PWHT-690 is the default FabDigit quotes; the values on this page are for it.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
PWHT | Use the 705 °C, 8–10 h treatment to envelope heavy-wall hydroprocessing welds given repeated or long PWHT: tensile falls to 570 MPa but toughness and temper-embrittlement resistance are best. | 470 | 570 | 25 | 162 HB | — |
PWHT-690Default PWHT | Pick stress relief at 690 °C ± 15 °C for 1 h, the classification test condition and the usual PWHT for P22 pressure equipment, for the best balance of 620 MPa tensile and 22% elongation. | 520 | 620 | 22 | 180 HB | — |
As-welded deposit | Use as-deposited weld metal only for thin walls, temporary parts or joints that will be heat treated later; the bainitic structure gives 760 MPa tensile with high hardness and low toughness. | 640 | 760 | 17 | 23 HRC | — |
What is ER80S-B3L?
ER80S-B3L (K30560) is a low-carbon version of the 2.25Cr-1Mo solid filler wire, matched to P22 base metal within the low-alloy steel consumable family. The reduced carbon lowers hardenability, as-welded hardness and cold-cracking tendency, while 690 °C post-weld heat treated deposits typically give 520 MPa yield, 620 MPa tensile, 22 % elongation and 180 HB (89 HRB), with service to 550 °C and a machinability rating of 45. It is supplied as spooled drawn wire and straight cut lengths for GTAW, GMAW and SAW. The deposit has no corrosion resistance and still needs preheat plus code PWHT; standard ER80S-B3 is the alternative where matching carbon content is specified. ER80S-B3L has a density of 7.83 g/cm³ (0.283 lb/in³), lighter than 80% of steel grades. It melts at 1,490°C (2,714 °F). ER80S-B3L has a yield strength of 520 MPa (75.4 ksi) and a tensile strength of 620 MPa (89.9 ksi) — stronger than 67% of steel grades. Elongation at break is 22% and the elastic modulus is 205 GPa (29.7 Msi).
What is ER80S-B3L used for?
- P22 pipe welding
- reheater/superheater tube welding
- hydrogen service vessels
- power plant piping
Advantages
- High service temperature — 550°C (1,022 °F), better than 95% of steel grades
- Tough — resists crack growth — 130 MPa·√m (118.3 ksi·√in), better than 89% of steel grades
- Readily welded — 80/100, better than 79% of steel grades
Limitations
- High embodied carbon — 2.6 kg CO₂/kg, worse than 87% of steel grades
ER80S-B3L properties
Typical room-temperature values for ER80S-B3L-PWHT-690; bars are the position among steel grades.
Physical3
ER80S-B3L has a density of 7.83 g/cm³ (0.283 lb/in³), lighter than 80% of steel grades. It melts at 1,490°C (2,714 °F).
Mechanical16
ER80S-B3L has a yield strength of 520 MPa (75.4 ksi) and a tensile strength of 620 MPa (89.9 ksi) — stronger than 67% of steel grades. Elongation at break is 22% and the elastic modulus is 205 GPa (29.7 Msi).
Thermal6
ER80S-B3L is rated for continuous service to 550°C (1,022 °F). It conducts heat at 38 W/m·K (22 BTU/hr·ft·°F), worse than 69% of steel grades. Thermal expansion is 12.5 µm/m·K (6.94 µin/in·°F).
Electrical3
ER80S-B3L conducts electricity at 7.8 % IACS, worse than 57% of steel grades.
Chemical & Environmental3
Corrosion resistance is poor (20/100), better than 87% of steel grades.
Sustainability4
Producing a kilogram of ER80S-B3L takes about 32 MJ of energy and emits 2.6 kg of CO₂ — more than 70% of steel grades. Typical recycled content is 30%.
Manufacturability7
ER80S-B3L's machinability is fair (45/100, worse than 65% of steel grades); weldability very good (80/100); formability good (55/100).
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 steel family
Yield strength against density for every steel grade FabDigit runs. ER80S-B3L is highlighted; hover a dot for its name, or open the interactive family chart.
Working with ER80S-B3L
Is ER80S-B3L easy to machine?
After 690 °C post-weld heat treatment the deposit machines close to annealed 4130 (machinability rating about 45); as-welded bainite is harder, so heat treat before finish machining.
Can ER80S-B3L be welded?
GTAW, GMAW and SAW all apply; typical preheat 150–230 °C, interpass ≤300 °C, and 690 °C post-weld stress relief. The low-carbon composition reduces as-welded hardness and cold-cracking tendency.
Can ER80S-B3L be formed, bent or molded?
Supplied as drawn spooled wire or straight cut lengths, with no forming operation at the user end; feedability depends on the copper coating and wire diameter tolerance.
ER80S-B3L 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 |
|---|---|---|
| Clow-carbon version, vs 0.07-0.12% for ER80S-B3 | ≤ 0.05 | 0.04 |
| Mn | 0.4 – 0.7 | 0.55 |
| Si | 0.4 – 0.7 | 0.55 |
| Cr | 2.3 – 2.7 | 2.45 |
| Mo | 0.9 – 1.2 | 1.05 |
| Ni | ≤ 0.2 | 0.05 |
| Cuincludes copper coating | ≤ 0.35 | 0.1 |
| P | ≤ 0.03 | 0.01 |
| S | ≤ 0.03 | 0.01 |
| Fe | balance |
What surface finishes work on ER80S-B3L?
The steel deposit has no corrosion resistance — blast and paint, aluminize, or apply a high-temperature coating to the equipment specification; anodizing does not apply.
Surface treatments FabDigit runs on 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).
Organic Coating
Black / Phosphate
Thermal Spray
Equivalent designations
Standards and trade names that resolve to Steel ER80S-B3L in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- K30560
- Other
- ER55S-B3L
How much does ER80S-B3L cost?
ER80S-B3L is a premium-cost 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.
ER80S-B3L — frequently asked
What is ER80S-B3L used for?
ER80S-B3L is typically used for P22 pipe welding, reheater/superheater tube welding, hydrogen service vessels and power plant piping. In short: low-carbon 2.25Cr-1Mo filler; lower cold-cracking tendency; hydrogen service weld metal.
What is the yield strength of ER80S-B3L?
ER80S-B3L has a typical yield strength of 520 MPa (75.4 ksi) and a tensile strength of 620 MPa (89.9 ksi) — stronger than 67% of steel grades. Strength varies by condition: see the 3 listed tempers.
Is ER80S-B3L easy to machine?
Reasonably — machinability is rated fair (45/100, worse than 65% of steel grades). After 690 °C post-weld heat treatment the deposit machines close to annealed 4130 (machinability rating about 45); as-welded bainite is harder, so heat treat before finish machining.
Can ER80S-B3L be welded?
Yes — weldability is rated very good (80/100). GTAW, GMAW and SAW all apply; typical preheat 150–230 °C, interpass ≤300 °C, and 690 °C post-weld stress relief. The low-carbon composition reduces as-welded hardness and cold-cracking tendency.
What surface finishes work on ER80S-B3L?
The steel deposit has no corrosion resistance — blast and paint, aluminize, or apply a high-temperature coating to the equipment specification; anodizing does not apply.
Can ER80S-B3L be formed, bent or molded?
Supplied as drawn spooled wire or straight cut lengths, with no forming operation at the user end; feedability depends on the copper coating and wire diameter tolerance.
What is the maximum service temperature of ER80S-B3L?
ER80S-B3L is rated for continuous use to about 550°C (1,022 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between ER80S-B3L PWHT-690 and ER80S-B3L-AW?
PWHT-690 is the default condition — pick stress relief at 690 °C ± 15 °C for 1 h, the classification test condition and the usual PWHT for P22 pressure equipment, for the best balance of 620 MPa tensile and 22% elongation. AW: use as-deposited weld metal only for thin walls, temporary parts or joints that will be heat treated later; the bainitic structure gives 760 MPa tensile with high hardness and low toughness. Yield strength is 520 MPa in PWHT-690 versus 640 MPa in AW.
How much does ER80S-B3L cost?
ER80S-B3L is a premium-cost 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
- AWS A5.28/A5.28M — Low-Alloy Steel Electrodes and Rods for Gas Shielded Arc Welding — American Welding Society (2020)
- ASME BPVC Section II Part C / Part D (SFA-5.28; 2.25Cr-1Mo physical & allowable data) — ASME (2023)
- ASM Handbook Vol.1 & Vol.6 — Cr-Mo steels and weld metals — ASM International (2005)
- ER80S-B3L/ER55S-B3L — Böhler / Lincoln / (2023)
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.