Steel E100C-K3
E100C-K3 is a Ni-Cr-Mo alloyed composite (metal-cored/flux-cored) electrode that deposits approximately 100 ksi tensile weld metal: 745 MPa tensile, 660 MPa yield, 20 % elongation and about 235 HB (22 HRC) as welded, with service to 400 °C.
Reference datasheet — E100C-K3 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 AW condition
E100C-K3 tempers and conditions
E100C-K3 is supplied in 2 conditions, soft to hard. AW is the default FabDigit quotes; the values on this page are for it.
Compare all 2 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Post-weld heat treated | Choose when code or thickness requires stress relief; strength drops slightly while toughness and residual-stress state improve. | 615 | 710 | 23 | 19 HRC | 8 % IACS |
AWDefault As-welded deposit | Default condition for classification testing and for most field welds on Q&T high-strength steel where no PWHT is applied. | 660 | 745 | 20 | 22 HRC | — |
What is E100C-K3?
E100C-K3 is a Ni-Cr-Mo alloyed composite (metal-cored/flux-cored) electrode that deposits approximately 100 ksi tensile weld metal: 745 MPa tensile, 660 MPa yield, 20 % elongation and about 235 HB (22 HRC) as welded, with service to 400 °C. It is used to weld quenched-and-tempered high-strength structural and offshore steels where matching strength is required, and is supplied as spooled tubular wire for gas-shielded semi-automatic and mechanised welding. Low-hydrogen handling, preheat and interpass control are mandatory to avoid delayed cracking; the deposit has mild-steel corrosion behaviour and needs coating. Step up to E110C-K3 for higher-strength base metals. E100C-K3 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). E100C-K3 has a yield strength of 660 MPa (95.7 ksi) and a tensile strength of 745 MPa (108 ksi) — stronger than 80% of steel grades. Elongation at break is 20% and the elastic modulus is 205 GPa (29.7 Msi).
What is E100C-K3 used for?
- Offshore platform structures
- High-strength structural steel fabrication
- Heavy equipment frames
- Military armor plate
Advantages
- Tough — resists crack growth — 130 MPa·√m (118.3 ksi·√in), better than 89% of steel grades
- High strength — 660 MPa (95.7 ksi), better than 80% of steel grades
Limitations
- High embodied carbon — 2.6 kg CO₂/kg, worse than 87% of steel grades
E100C-K3 properties
Typical room-temperature values for E100C-K3-AW; bars are the position among steel grades.
Physical3
E100C-K3 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).
Mechanical15
E100C-K3 has a yield strength of 660 MPa (95.7 ksi) and a tensile strength of 745 MPa (108 ksi) — stronger than 80% of steel grades. Elongation at break is 20% and the elastic modulus is 205 GPa (29.7 Msi).
Thermal6
E100C-K3 is rated for continuous service to 400°C (752 °F). It conducts heat at 40 W/m·K (23.1 BTU/hr·ft·°F), worse than 64% of steel grades. Thermal expansion is 12.3 µm/m·K (6.83 µin/in·°F).
Electrical3
E100C-K3 conducts electricity at 7.8 % IACS, worse than 57% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (14/100), better than 70% of steel grades.
Sustainability4
Producing a kilogram of E100C-K3 takes about 36 MJ of energy and emits 2.6 kg of CO₂ — more than 89% of steel grades. Typical recycled content is 25%.
Manufacturability7
E100C-K3's machinability is fair (42/100, worse than 73% 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. E100C-K3 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with E100C-K3
Is E100C-K3 easy to machine?
As-deposited weld metal machines like a 700 MPa Q&T alloy steel — carbide tooling, moderate speeds; grind or mill after PWHT for best tool life.
Can E100C-K3 be welded?
Gas-shielded (75-80%Ar/bal CO₂ or 100% CO₂ per classification), DCEP; preheat and interpass control per steel thickness/CE and low-hydrogen practice are mandatory to avoid delayed cracking.
Can E100C-K3 be formed, bent or molded?
Not applicable as a wrought product; joint design should limit restraint and allow multipass bead sequencing to control distortion in high-strength plate.
E100C-K3 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 |
|---|---|---|
| Cdeposited weld metal, AWS A5.28 K3 | ≤ 0.15 | 0.06 |
| Mn | 0.75 – 2.25 | 1.5 |
| Si | ≤ 0.8 | 0.45 |
| Ni | 1.25 – 2.6 | 1.9 |
| Cr | ≤ 0.15 | 0.08 |
| Mo | 0.25 – 0.65 | 0.45 |
| V | ≤ 0.05 | 0.01 |
| P | ≤ 0.03 | 0.01 |
| S | ≤ 0.03 | 0.01 |
| Fe | balance |
What surface finishes work on E100C-K3?
Weld caps grind and blend readily; protect with zinc-rich primer, paint or metallizing since the deposit has essentially mild-steel corrosion behaviour.
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 E100C-K3 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- Also called
- AWS E100C-K3AWS E69C-K3
How much does E100C-K3 cost?
E100C-K3 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.
E100C-K3 — frequently asked
What is E100C-K3 used for?
E100C-K3 is typically used for offshore platform structures, high-strength structural steel fabrication, heavy equipment frames and military armor plate. In short: 100 ksi weld deposit; for Q&T structural steels; low-hydrogen composite wire.
What is the yield strength of E100C-K3?
E100C-K3 has a typical yield strength of 660 MPa (95.7 ksi) and a tensile strength of 745 MPa (108 ksi) — stronger than 80% of steel grades. Strength varies by condition: see the 2 listed tempers.
Is E100C-K3 easy to machine?
Not especially — machinability is rated fair (42/100, worse than 73% of steel grades). As-deposited weld metal machines like a 700 MPa Q&T alloy steel — carbide tooling, moderate speeds; grind or mill after PWHT for best tool life.
Can E100C-K3 be welded?
Yes — weldability is rated very good (70/100). Gas-shielded (75-80%Ar/bal CO₂ or 100% CO₂ per classification), DCEP; preheat and interpass control per steel thickness/CE and low-hydrogen practice are mandatory to avoid delayed cracking.
What surface finishes work on E100C-K3?
Weld caps grind and blend readily; protect with zinc-rich primer, paint or metallizing since the deposit has essentially mild-steel corrosion behaviour.
Can E100C-K3 be formed, bent or molded?
Not applicable as a wrought product; joint design should limit restraint and allow multipass bead sequencing to control distortion in high-strength plate.
What is the maximum service temperature of E100C-K3?
E100C-K3 is rated for continuous use to about 400°C (752 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between E100C-K3-AW and E100C-K3 PWHT?
AW is the default condition — default condition for classification testing and for most field welds on Q&T high-strength steel where no PWHT is applied. PWHT: choose when code or thickness requires stress relief; strength drops slightly while toughness and residual-stress state improve. Yield strength is 660 MPa in AW versus 615 MPa in PWHT.
How much does E100C-K3 cost?
E100C-K3 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)
- AWS D1.1/D1.1M Structural Welding Code — Steel — American Welding Society (2020)
- ASM Handbook Vol.6 — Welding, Brazing and Soldering — ASM International (1993)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
- Metal-cored 100 ksi low-alloy wire datasheets (Lincoln Electric, ESAB, Kobelco) — various producers (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.