Steel E80C-B3L
UNS W53130
E80C-B3L (UNS W53130) is a low-carbon 2.25Cr-1Mo composite cored electrode for high-temperature Cr-Mo piping and vessels, depositing 510 MPa yield and 610 MPa tensile metal with 24 % elongation and about 185 HB (90 HRB) after PWHT.
Reference datasheet — E80C-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
E80C-B3L tempers and conditions
E80C-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 730 °C / 1–4 h | Choose when the base metal PWHT is at the upper end or when maximum toughness and lowest residual hardness are required for hydrogen service. | 470 | 570 | 27 | 165 HB | — |
PWHT-690Default PWHT 690 °C / 1 h | Standard supply/qualification condition — use for P22 piping and Cr-Mo vessels after the code-required stress relief. | 510 | 610 | 24 | 185 HB | — |
As-welded deposit | Only for thin sections or temporary work — bainitic/martensitic weld metal is hard and hydrogen-crack sensitive. | 680 | 780 | 17 | 26 HRC | — |
What is E80C-B3L?
E80C-B3L (UNS W53130) is a low-carbon 2.25Cr-1Mo composite cored electrode for high-temperature Cr-Mo piping and vessels, depositing 510 MPa yield and 610 MPa tensile metal with 24 % elongation and about 185 HB (90 HRB) after PWHT. The reduced carbon lowers hardenability and cracking risk, which suits thick reactor sections and hydrogen service; supplied as spooled cored wire in AW, PWHT-690 and PWHT-730 conditions. Service is limited to about 550 °C, PWHT is required for ASME work, and the deposit offers no atmospheric corrosion resistance. E80C-B2 is the 1.25Cr-0.5Mo alternative for lower-temperature lines. E80C-B3L has a density of 7.8 g/cm³ (0.282 lb/in³), lighter than 87% of steel grades. It melts at 1,450°C (2,642 °F). E80C-B3L has a yield strength of 510 MPa (74 ksi) and a tensile strength of 610 MPa (88.5 ksi) — stronger than 65% of steel grades. Elongation at break is 24% and the elastic modulus is 207 GPa (30 Msi).
What is E80C-B3L used for?
- 2.25Cr-1Mo reactor vessels
- High-temperature hydrogen service piping
- Power plant headers
- Refinery process equipment
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
Limitations
- High embodied carbon — 2.6 kg CO₂/kg, worse than 87% of steel grades
E80C-B3L properties
Typical room-temperature values for E80C-B3L-PWHT-690; bars are the position among steel grades.
Physical3
E80C-B3L has a density of 7.8 g/cm³ (0.282 lb/in³), lighter than 87% of steel grades. It melts at 1,450°C (2,642 °F).
Mechanical16
E80C-B3L has a yield strength of 510 MPa (74 ksi) and a tensile strength of 610 MPa (88.5 ksi) — stronger than 65% of steel grades. Elongation at break is 24% and the elastic modulus is 207 GPa (30 Msi).
Thermal6
E80C-B3L is rated for continuous service to 550°C (1,022 °F). It conducts heat at 36 W/m·K (20.8 BTU/hr·ft·°F), worse than 73% of steel grades. Thermal expansion is 12.3 µm/m·K (6.83 µin/in·°F).
Electrical3
E80C-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 E80C-B3L takes about 36 MJ of energy and emits 2.6 kg of CO₂ — more than 89% of steel grades. Typical recycled content is 30%.
Manufacturability7
E80C-B3L's machinability is fair (52/100, better than 52% of steel grades); weldability very good (70/100); formability fair (35/100).
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. E80C-B3L is highlighted; hover a dot for its name, or open the interactive family chart.
Working with E80C-B3L
Is E80C-B3L easy to machine?
PWHT weld metal machines like normalized-and-tempered 2.25Cr-1Mo; as-welded beads at 260+ HB dull carbide quickly, so machine after stress relief.
Can E80C-B3L be welded?
FCAW/GMAW with 75-80% Ar / balance CO2 (or CO2 for some formulations); preheat and interpass 150–250 °C, low-hydrogen practice, and PWHT at 690–730 °C per ASME code.
Can E80C-B3L be formed, bent or molded?
Not a wrought product — deposit shape is controlled by joint design, stringer beads and controlled heat input (typically 1.0–2.0 kJ/mm).
E80C-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 |
|---|---|---|
| C'L' = low carbon, reduces hardenability | ≤ 0.05 | 0.03 |
| Mn | ≤ 1.25 | 0.85 |
| Si | ≤ 0.8 | 0.4 |
| Cr | 2 – 2.5 | 2.25 |
| Mo | 0.9 – 1.2 | 1 |
| Nirestricted for elevated-temperature service | ≤ 0.2 | 0.05 |
| Plower P specified for hydrogen/step-cool service | ≤ 0.03 | 0.01 |
| S | ≤ 0.03 | 0.01 |
| Vresidual | ≤ 0.05 | 0.01 |
| Curesidual | ≤ 0.35 | 0.05 |
| Fe | balance |
What surface finishes work on E80C-B3L?
Remove slag/oxide fully between passes; finish with grinding plus aluminized or high-temperature silicone coating, or leave bare inside insulated hot piping.
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 E80C-B3L in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- W53130
- Also called
- AWS E80C-B3LAWS E55C-B3L
How much does E80C-B3L cost?
E80C-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.
E80C-B3L — frequently asked
What is E80C-B3L used for?
E80C-B3L is typically used for 2.25Cr-1Mo reactor vessels, high-temperature hydrogen service piping, power plant headers and refinery process equipment. In short: low-carbon 2.25Cr-1Mo deposit; hydrogen-service Cr-Mo filler; reduced weld hardenability.
What is the yield strength of E80C-B3L?
E80C-B3L has a typical yield strength of 510 MPa (74 ksi) and a tensile strength of 610 MPa (88.5 ksi) — stronger than 65% of steel grades. Strength varies by condition: see the 3 listed tempers.
Is E80C-B3L easy to machine?
Reasonably — machinability is rated fair (52/100, better than 52% of steel grades). PWHT weld metal machines like normalized-and-tempered 2.25Cr-1Mo; as-welded beads at 260+ HB dull carbide quickly, so machine after stress relief.
Can E80C-B3L be welded?
Yes — weldability is rated very good (70/100). FCAW/GMAW with 75-80% Ar / balance CO2 (or CO2 for some formulations); preheat and interpass 150–250 °C, low-hydrogen practice, and PWHT at 690–730 °C per ASME code.
What surface finishes work on E80C-B3L?
Remove slag/oxide fully between passes; finish with grinding plus aluminized or high-temperature silicone coating, or leave bare inside insulated hot piping.
Can E80C-B3L be formed, bent or molded?
Not a wrought product — deposit shape is controlled by joint design, stringer beads and controlled heat input (typically 1.0–2.0 kJ/mm).
What is the maximum service temperature of E80C-B3L?
E80C-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 E80C-B3L PWHT-690 and E80C-B3L-AW?
PWHT-690 is the default condition — standard supply/qualification condition — use for P22 piping and Cr-Mo vessels after the code-required stress relief. AW: only for thin sections or temporary work — bainitic/martensitic weld metal is hard and hydrogen-crack sensitive. Yield strength is 510 MPa in PWHT-690 versus 680 MPa in AW.
How much does E80C-B3L cost?
E80C-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 A5.29/A5.29M — Low-Alloy Steel Electrodes for Flux Cored Arc Welding — American Welding Society (2010)
- ASME BPVC Section II Part C (SFA-5.29) and Part D (2.25Cr-1Mo physical properties) — ASME (2023)
- ASM Handbook Vol.6 — Welding, Brazing and Soldering (Cr-Mo steels) — ASM International (1993)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels — ASM International (1990)
- Cr-Mo flux-cored wire datasheets (Kobelco, Lincoln, ESAB, Böhler) — various (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.