Stainless Steel E410NiMo
UNS W41016
E410NiMo is a nickel- and molybdenum-modified 410-type martensitic stainless electrode (W41016 / E410NiMo-16, GB/T 983) that deposits weld metal matching CA6NM 13Cr-4Ni-Mo castings.
Reference datasheet — E410NiMo 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
E410NiMo tempers and conditions
E410NiMo is supplied in 6 conditions, soft to hard. AW is the default FabDigit quotes; the values on this page are for it.
Compare all 6 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Double temper | Hydro-turbine practice: first temper forms reverted austenite, second temper conditions any fresh martensite — maximum toughness and lowest hardness for runner repairs. | 640 | 780 | 20 | 23 HRC | — |
PWHT 595 °C | Standard post-weld temper used for AWS classification testing and for most CA6NM repairs — balances strength with much better toughness and lower hardness. | 700 | 830 | 18 | 26 HRC | — |
Rutile-silica coating, AC or DCEP | Silica-modified rutile coating with the smoothest bead appearance and best out-of-position handling; slightly higher silicon in the deposit. | 750 | 890 | 14 | 34 HRC | 2.2 % IACS |
AWDefault As-welded deposit | Condition of the deposit straight off the arc — highest hardness/strength, lowest toughness; use when no PWHT is possible and service loads are moderate. | 760 | 900 | 15 | 34 HRC | — |
Rutile/titania-basic coating, AC or DCEP | Most widely stocked coating type (also the GB/T 983 E410NiMo-16 designation) — smooth arc, easy slag release, AC-capable for field repair. | 760 | 900 | 15 | 34 HRC | 2.2 % IACS |
Lime/basic coating, DCEP only | Basic-coated version: lowest diffusible hydrogen and best deposit toughness — first choice for thick-section CA6NM repair where cracking risk is high. | 770 | 910 | 16 | 33 HRC | 2.2 % IACS |
What is E410NiMo?
E410NiMo is a nickel- and molybdenum-modified 410-type martensitic stainless electrode (W41016 / E410NiMo-16, GB/T 983) that deposits weld metal matching CA6NM 13Cr-4Ni-Mo castings. It is used for repair and overlay of hydro turbine runners, pumps and valves, and is supplied as covered electrodes in -15, -16 and -17 coating types. The as-welded deposit is hard — 34 HRC (320 HB), 900 MPa tensile, 760 MPa yield, 15 % elongation — so a 595–620 °C temper is normally applied before machining. Service is limited to about 400 °C; E309L is the usual alternative when a softer austenitic deposit is acceptable. E410NiMo has a density of 7.7 g/cm³ (0.278 lb/in³), lighter than 83% of stainless steel grades. It melts at 1,400°C (2,552 °F). E410NiMo has a yield strength of 760 MPa (110 ksi) and a tensile strength of 900 MPa (131 ksi) — stronger than 94% of stainless steel grades. Elongation at break is 15% and the elastic modulus is 200 GPa (29 Msi).
What is E410NiMo used for?
- hydro turbine runner repair
- CA6NM casting weld repair
- pump and valve components
Advantages
- High strength — 760 MPa (110 ksi), better than 94% of stainless steel grades
- Conducts heat well — 25 W/m·K (14.4 BTU/hr·ft·°F), better than 93% of stainless steel grades
- Low embodied carbon — 3.6 kg CO₂/kg, better than 83% of stainless steel grades
Limitations
- Needs corrosion protection — 42/100, worse than 90% of stainless steel grades
- Limited ductility — 15%, worse than 89% of stainless steel grades
- Low fracture toughness — 60 MPa·√m (54.6 ksi·√in), worse than 88% of stainless steel grades
- Limited service temperature — 400°C (752 °F), worse than 78% of stainless steel grades
E410NiMo properties
Typical room-temperature values for E410NiMo-AW; bars are the position among stainless steel grades.
Physical3
E410NiMo has a density of 7.7 g/cm³ (0.278 lb/in³), lighter than 83% of stainless steel grades. It melts at 1,400°C (2,552 °F).
Mechanical15
E410NiMo has a yield strength of 760 MPa (110 ksi) and a tensile strength of 900 MPa (131 ksi) — stronger than 94% of stainless steel grades. Elongation at break is 15% and the elastic modulus is 200 GPa (29 Msi).
Thermal6
E410NiMo is rated for continuous service to 400°C (752 °F). It conducts heat at 25 W/m·K (14.4 BTU/hr·ft·°F), better than 93% of stainless steel grades. Thermal expansion is 10.5 µm/m·K (5.83 µin/in·°F).
Electrical3
E410NiMo conducts electricity at 2.2 % IACS, worse than 61% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is fair (42/100), worse than 90% of stainless steel grades.
Sustainability4
Producing a kilogram of E410NiMo takes about 48 MJ of energy and emits 3.6 kg of CO₂ — less than 85% of stainless steel grades. Typical recycled content is 55%.
Manufacturability5
E410NiMo's machinability is poor (32/100, worse than 62% of stainless steel grades); weldability 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 stainless steel family
Yield strength against density for every stainless steel grade FabDigit runs. E410NiMo is highlighted; hover a dot for its name, or open the interactive family chart.
Working with E410NiMo
Is E410NiMo easy to machine?
Machine after tempering (≤26 HRC); as-welded deposit at 34+ HRC needs carbide tooling, low speed and rigid setup — finish grinding is usually preferred for turbine blade profiles.
Can E410NiMo be welded?
Preheat/interpass 100–160 °C, keep interpass below ~150 °C to allow martensite transformation, cool to ~100 °C before the 595–620 °C temper; redry electrodes (250–300 °C) and never temper above Ac1 (~630 °C).
Can E410NiMo be formed, bent or molded?
Not applicable — consumable electrode; deposit shape is controlled by weave, bead sequence and buttering layers rather than forming.
E410NiMo 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 soft martensite | ≤ 0.06 | 0.03 |
| Cr | 11 – 12.5 | 11.8 |
| Ni | 4 – 5 | 4.5 |
| Mo | 0.4 – 0.7 | 0.55 |
| Mn | ≤ 1 | 0.7 |
| Siupper end for -17 coating type | ≤ 0.9 | 0.4 |
| Cu | ≤ 0.75 | |
| P | ≤ 0.04 | |
| S | ≤ 0.03 | |
| Fe | balance |
What surface finishes work on E410NiMo?
Deposits blend-grind and polish well and can be shot-peened for cavitation service; passivate or leave bare — do not plate before tempering because of hydrogen embrittlement risk.
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 E410NiMo in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- W41016
- Also called
- AWS A5.4 E410NiMoAWS A5.4 E410NiMo-XX
How much does E410NiMo cost?
E410NiMo is a high-cost stainless steel ($$$$), pricier than about 78% 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.
E410NiMo — frequently asked
What is E410NiMo used for?
E410NiMo is typically used for hydro turbine runner repair, CA6NM casting weld repair and pump and valve components. In short: CA6NM-matching deposit; cavitation-resistant overlay; requires post-weld temper.
What is the yield strength of E410NiMo?
E410NiMo has a typical yield strength of 760 MPa (110 ksi) and a tensile strength of 900 MPa (131 ksi) — stronger than 94% of stainless steel grades. Strength varies by condition: see the 6 listed tempers.
Is E410NiMo easy to machine?
Not especially — machinability is rated poor (32/100, worse than 62% of stainless steel grades). Machine after tempering (≤26 HRC); as-welded deposit at 34+ HRC needs carbide tooling, low speed and rigid setup — finish grinding is usually preferred for turbine blade profiles.
Can E410NiMo be welded?
Yes — weldability is rated good (55/100). Preheat/interpass 100–160 °C, keep interpass below ~150 °C to allow martensite transformation, cool to ~100 °C before the 595–620 °C temper; redry electrodes (250–300 °C) and never temper above Ac1 (~630 °C).
What surface finishes work on E410NiMo?
Deposits blend-grind and polish well and can be shot-peened for cavitation service; passivate or leave bare — do not plate before tempering because of hydrogen embrittlement risk.
Can E410NiMo be formed, bent or molded?
Not applicable — consumable electrode; deposit shape is controlled by weave, bead sequence and buttering layers rather than forming.
What is the maximum service temperature of E410NiMo?
E410NiMo 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 E410NiMo-AW and E410NiMo PWHT-DT?
AW is the default condition — condition of the deposit straight off the arc — highest hardness/strength, lowest toughness; use when no PWHT is possible and service loads are moderate. PWHT-DT: hydro-turbine practice: first temper forms reverted austenite, second temper conditions any fresh martensite — maximum toughness and lowest hardness for runner repairs. Yield strength is 760 MPa in AW versus 640 MPa in PWHT-DT.
How much does E410NiMo cost?
E410NiMo is a high-cost stainless steel ($$$$), pricier than about 78% 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 A5.4/A5.4M Specification for Stainless Steel Electrodes for Shielded Metal Arc Welding — American Welding Society (2012)
- ASTM A743/A743M (CA6NM casting grade) — ASTM International (2019)
- ASM Handbook Vol. 6 — Welding, Brazing and Soldering (martensitic stainless welding) — ASM International (1993)
- ASM Handbook Vol. 1 — Properties of Stainless Steels — ASM International (1990)
- 410NiMo covered electrode datasheets (Böhler, Lincoln, ESAB, / ) — various consumable 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.