AWS Class E410-15 Welding Electrode

E410-15 Stainless Steel Welding Electrode Supplier in Mumbai, India

Nicorex Alloys is an ISO 9001 and ISO 14001 certified stockist and supplier of E410-15 martensitic stainless steel welding electrodes, based in Mumbai, India. We stock and supply these basic-coated SMAW consumables as classified under AWS A5.4 / ASME SFA 5.4.
E410-15 is classified as a basic (lime-type) coated electrode that operates on DCEP only. The -15 suffix identifies a CaCO₃-CaF₂ flux system that produces inherently low hydrogen weld deposits and higher all-weld-metal toughness. The weld deposit is a 12% chromium martensitic stainless steel (UNS W41010) with a typical tensile strength of 540–550 MPa and elongation of 26–29% after mandatory PWHT at 730–760°C. As-welded, the deposit air-hardens to 35–42 HRC, making preheat above 200°C and post-weld heat treatment non-negotiable for structural service. The electrode serves as an overlay consumable on carbon and low-alloy steel substrates for erosion and corrosion resistance. Fast-freezing basic slag supports vertical and overhead welding during in-situ turbine repair, valve seat surfacing, and roll hardfacing. E410-15 also carries the EN ISO 3581-A designation E 13 B 4 2.
Available diameters are 2.5, 3.2, 4.0, and 5.0 mm in lengths of 300–450 mm, with all-position capability up to 4.0 mm. Primary base metals include AISI 410, 410S, 403, 405, 414, 416, 420, and CA-15 castings, all grouped under ASME P-6. Key industries include hydroelectric power, oil & gas, thermal power generation, and more, as explained further. Every batch ships with an MTC 3.1 per EN 10204, backed by full traceability documentation.

E410-15 Stainless Stick Electrode Specifications & Standards

The following table summarises key specifications and standard compliance for E410-15 basic-coated martensitic stainless steel SMAW electrodes.

AWS Classification	E410-15
ASME SFA Standard	SFA 5.4
UNS Number (Weld Deposit)	W41010
Welding Process	SMAW (Shielded Metal Arc / Stick Welding)
Electrode Coating	Basic / Lime (CaCO₃ + CaF₂ based)
Current / Polarity	DCEP (DC+) only
Welding Positions	All positions (≤4.0 mm); Flat & Horizontal (5.0 mm)
Available Diameters	2.5, 3.2, 4.0, 5.0 mm
Electrode Length	300–350 mm (≤3.2 mm); 350–450 mm (≥4.0 mm)
Weld Deposit Type	Martensitic Stainless Steel (12% Cr, air-hardening)

Understanding the E410-15 Designation — What Each Character Means in AWS A5.4

Every character in the AWS A5.4 classification carries a specific meaning. The breakdown below explains what E410-15 tells a welding engineer.

Character	Meaning
E	Electrode — designed for the SMAW (stick welding) process
410	AISI 410 type weld deposit — straight chromium (11.0–13.5% Cr) martensitic stainless steel
-15	Basic/lime flux coating (CaCO₃ + CaF₂) — DCEP only, low hydrogen, fast-freezing slag

The -15 suffix marks a calcium carbonate and calcium fluoride flux that shields the arc in a low-hydrogen atmosphere, producing weld metal with fewer oxide inclusions and higher impact toughness than the -16 rutile alternative. The compromise is operability: -15 runs on DCEP only with a stiffer arc, while -16 accepts AC or DCEP with smoother transfer. Both E410-15 and E410-16 deposit the same chemistry under UNS W41010. The difference is entirely in coating type and arc behaviour, not the alloy.

Chemical Composition of E410-15 Weld Deposit (%)

The chemical composition below represents all-weld-metal deposit analysis as per AWS A5.4 / ASME SFA 5.4 and the typical values.

Element	C	Cr	Ni	Mo	Mn	Si	P	S	Cu
AWS A5.4 Spec Limits (wt%)	0.12 max	11.0 – 13.5	0.70 max	0.75 max	1.0 max	0.90 max	0.04 max	0.03 max	0.75 max
Typical Values	0.054	12.50	0.12	0.030	0.55	0.20	0.020	0.007	0.030

These are weld deposit values, not base metal or core wire analysis. Actual deposit composition varies with welding parameters, dilution, and technique. Basic (-15) coating typically yields slightly different Mn and Si pickup compared to rutile (-16) because of flux chemistry differences.

All-Weld-Metal Mechanical Properties of E410-15

Mechanical properties below are for all-weld-metal deposit tested after PWHT. For E410-15, PWHT is mandatory; as-welded specimens show sharply different results because of untempered martensite.

After PWHT (730–760°C / 1–2 hours, furnace cool to ≤315°C):

Property	Ultimate Tensile Strength	Yield Strength (0.2% offset)	Elongation	Hardness
AWS A5.4 Minimum	520 MPa (75,000 psi)	—	20%	—
Typical Value	540–550 MPa	410–450 MPa	26–29%	22–30 HRC (tempered martensite)

As-Welded (hardfacing/overlay reference only):

Condition	Hardness	Note
As-Welded (hardfacing / overlay reference)	35–42 HRC (untempered martensite)	As-welded deposit is brittle — NOT suitable for structural service without PWHT

Basic (-15) coating produces higher toughness than rutile (-16) for the same E410 composition. The CaCO₃-CaF₂ flux acts as a stronger deoxidiser, leaving fewer non-metallic inclusions. Fewer inclusions mean fewer crack initiation points under impact; the reason code-critical turbine repair and fatigue-loaded applications specify E410-15.

Base Metal Compatibility & P-Number Matrix for E410-15

E410-15 is designed for joining martensitic chromium stainless steels (ASME P-6) and for corrosion/erosion-resistant overlays on carbon and low-alloy steel substrates.

Base Metal	UNS	ASME P-No.	Notes
AISI 410	S41000	P-6 Gr.1	Similar metal
AISI 410S	S41008	P-6 Gr.2	Similar metal
AISI 403	S40300	P-6 Gr.1	Similar metal
AISI 405	S40500	P-6 Gr.2	Similar metal
AISI 414	S41400	P-6 Gr.3	Similar metal
AISI 416	S41600	P-6 Gr.1	Similar metal
AISI 420	S42000	P-6 Gr.3	Similar metal
CA-15 Castings	—	P-6	Similar metal
Carbon Steel	—	P-1	Overlay (corrosion / erosion)
Low-Alloy Steel	—	P-3, P-4, P-5	Overlay (abrasion)

Warning: For dissimilar joints between 410-type martensitic and austenitic grades (304, 316), do not use E410-15. Use E309L-16 or ENiCrFe-3 (Inconel 182) to prevent brittle fusion-line cracking.

Recommended Welding Parameters & Preheat/PWHT Procedure for E410-15

E410-15 runs on DCEP only. AC causes arc extinction at zero-crossing because the basic coating lacks ionising compounds found in rutile (-16) electrodes.

Diameter	Current Range (DCEP)	Electrode Length
2.5 mm (3/32″)	50–100 A	300 mm
3.2 mm (1/8″)	70–130 A	350 mm
4.0 mm (5/32″)	100–160 A	350 mm
5.0 mm (3/16″)	160–200 A	450 mm

Arc voltage sits at 22–28 V. Keep travel speed moderate to limit HAZ size. Electrode stickout should stay at 1–1.5 times the electrode diameter.

Thermal Control Procedure:

Parameter	Requirement
Preheat	200–350°C (400–660°F) — MANDATORY
Interpass Temperature	200–315°C (400–600°F)
Slow Cool After Welding	Wrap in insulating blankets; do not rapid-cool
PWHT	730–760°C (1350–1400°F), hold 1 h per 25 mm thickness
Furnace Cool	Cool to ≤315°C (600°F) at ≤110°C/h, then air cool
Temper Embrittlement Zone	AVOID 425–550°C (800–1020°F) range

The -15 basic coating produces fast-freezing slag with globular metal transfer. Use a slight whipping technique (approximately 3 mm forward step plus pause) to build the puddle. Arc starts are harder than -16; strike on a run-on tab when possible.

Premium Industrial Materials

Get E410-15 Stainless Steel Welding Electrode at Competitive Prices

ISO Certified

Custom Sizes

Fast Delivery

Get a Quote

Industrial Welding Applications of E410-15 Martensitic Electrode

Basic low-hydrogen coating, superior toughness after PWHT, and martensitic hardness for as-welded overlay make E410-15 a specialist electrode for demanding repair and fabrication across heavy industry.

Repair of Francis and Pelton turbine runners, guide vanes, and blade tips cast from 13Cr alloys.
Gate valve seats, globe valve discs, and ball valve trim surfaced with E410-15 gain a hard, corrosion-resistant 12Cr overlay. Build-up repair of compressor impellers, shaft sleeves, and wear rings in hydrocarbon service also relies on this electrode.
Steam turbine blades, diaphragms, nozzle rings, and exhaust hood parts made from 410 stainless steel are repaired with E410-15. Rotating components under fatigue loading.
Hardfacing overlay on caster rolls, pinch rolls, and table rolls. Furnace door plates, burner tips, and heat-resistant fixtures below 815°C are also surfaced with E410-15.
A 12Cr martensitic overlay on carbon steel digester shells, fan blades, agitator shafts, and pump casings.

Storage, Handling & Re-Drying of E410-15 Basic-Coated Electrodes

Moisture is the single greatest threat to basic-coated electrodes. Absorbed moisture introduces diffusible hydrogen into the weld deposit; a direct path to delayed cracking in the air-hardened martensitic HAZ. E410-15 electrodes ship in hermetically sealed canisters or vacuum-packed cartons. Do not open until ready to weld. After opening, transfer rods to a holding oven at 100–150°C (210–300°F). Maximum ambient exposure is 4 hours. Electrodes beyond this limit must be re-dried at 250–300°C (480–570°F) for minimum 1 hour, then returned to the oven. Limit re-baking to 2 cycles; repeated heating degrades coating integrity. Store sealed packages in a dry warehouse above 5°C with relative humidity below 60%. Keep cartons off the ground on pallets.

How to Order E410-15 Coated Electrode from Nicorex Alloys

Request a quotation for E410-15 basic-coated martensitic stainless steel electrodes by providing the following 8 details:

AWS Classification E410-15 (confirm -15, not -16)
Diameter(s) required 2.5, 3.2, 4.0, and/or 5.0 mm
Quantity in kg (or number of sealed cans/cartons)
Packaging preference: Hermetically sealed cans or vacuum-packed cartons
Required third-party approvals: DNV, ABS, Lloyds, BV, etc.
Test certificate requirements: MTC 3.1 per EN 10204 (standard), or additional testing
Delivery address and required delivery date
Project specification reference (if applicable)

Nicorex Alloys also supplies ER410 TIG filler rods and ER410 MIG wire for projects needing multiple processes on the same alloy system. All consumables share identical weld deposit chemistry (UNS W41010).

Frequently Asked Questions

What is the Price of E410-15 Welding Rod per Kg in India?

E410-15 pricing varies with diameter, order quantity, and current raw material costs. Contact Nicorex Alloys for live rates, bulk discounts, and custom packaging options.

What is the Difference Between E410-15 and E410-16 Welding Electrodes?

Both produce identical weld deposit chemistry (12Cr martensitic, UNS W41010) as per AWS A5.4. E410-15 carries a basic/lime coating on DCEP only, yielding lower hydrogen and superior toughness for code-critical work. E410-16 uses a rutile/titania coating on AC or DCEP, giving easier operation for general-purpose jobs.

Why is E410-15 Preferred over E410-16 for Hydro Turbine Runner Repair?

Turbine runners are thick, restrained 13Cr castings where hydrogen cracking is the primary risk. The basic coating of E410-15 delivers lower diffusible hydrogen than E410-16, cutting crack susceptibility. Fast-freezing slag gives positional control for overhead and vertical in-situ repairs, and -15 yields higher Charpy impact values, critical for components under dynamic loading.

Can the E410-15 Electrode be Used with AC Welding Current?

No. The basic coating lacks ionising compounds (potassium, titanium) found in rutile (-16) electrodes. On AC, the arc extinguishes at each zero-crossing and cannot re-establish, causing erratic behaviour, porosity, and poor bead formation.

Why does E410-15 Deliver Higher Weld Metal Toughness than E410-16?

The CaCO₃-CaF₂ flux is a stronger deoxidiser and desulfuriser than rutile flux, producing weld metal with fewer non-metallic inclusions. Fewer inclusions mean fewer crack initiation sites under impact, giving higher Charpy V-notch values. Lower diffusible hydrogen also prevents microcracking in the martensitic matrix. Nuclear, military, and critical-service codes often mandate -15 over -16 for this reason.

When not to Use E410-15 Electrode?

Do not use E410-15 for dissimilar joints; use E309L-16 or ENiCrFe-3 instead. Do not run it on AC. Avoid strong reducing acids or high-chloride service where 12Cr deposits lack adequate resistance. Never weld without preheat above 200°C on structural joints; skipping preheat guarantees hydrogen cracking.