Description
:root { –arctig-brand-red: #e8380d; –arctig-brand-red-hover: #c42e09; –arctig-brand-red-tint: #fff1ee; –arctig-brand-red-border: #fdd4cb; –arctig-white: #ffffff; –arctig-bg-page: #f5f5f5; –arctig-bg-card: #ffffff; –arctig-bg-stripe: #f9f9f9; –arctig-bg-alt: #f0f0f0; –arctig-border-light: #e6e6e6; –arctig-border-mid: #cccccc; –arctig-text-dark: #1a1a1a; –arctig-text-body: #3d3d3d; –arctig-text-muted: #777777; –arctig-text-faint: #aaaaaa; –arctig-green-best: #1a7a36; –arctig-green-bg: #edf7f1; –arctig-amber-good: #996600; –arctig-amber-bg: #fdf6e3; –arctig-blue-works: #1a5fa8; –arctig-blue-bg: #eef4fc; –arctig-red-avoid: #b52800; –arctig-red-bg: #fdf0ed; –arctig-font-ui: ‘DM Sans’, sans-serif; –arctig-font-data: ‘DM Mono’, monospace; –arctig-radius-lg: 14px; –arctig-shadow-card: 0 1px 3px rgba(0,0,0,0.07), 0 3px 10px rgba(0,0,0,0.05); –arctig-shadow-hover: 0 4px 18px rgba(232,56,13,0.13), 0 2px 8px rgba(0,0,0,0.07); } *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; } .arctig-page { background: var(–arctig-bg-page); font-family: var(–arctig-font-ui); font-size: 15px; color: var(–arctig-text-body); line-height: 1.65; padding-bottom: 64px; } /* ── SECTION TITLES ───────────────────────────────────────── */ .arctig-section-title { font-size: clamp(1.1rem, 2.8vw, 1.55rem); font-weight: 700; color: var(–arctig-text-dark); letter-spacing: -0.02em; margin: 48px 0 20px; padding-bottom: 13px; border-bottom: 2px solid var(–arctig-border-light); position: relative; } .arctig-section-title::after { content: ”; position: absolute; bottom: -2px; left: 0; width: 36px; height: 2px; background: var(–arctig-brand-red); border-radius: 2px; } /* ── COMPATIBLE ALLOYS TABLE ──────────────────────────────── */ .arctig-compat-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; border-radius: var(–arctig-radius-lg); border: 1px solid var(–arctig-border-light); box-shadow: var(–arctig-shadow-card); } .arctig-compat-table { width: 100%; min-width: 480px; border-collapse: collapse; background: var(–arctig-bg-card); font-size: 0.875rem; } .arctig-compat-thead-alloy { background: var(–arctig-brand-red); text-align: left; padding: 13px 20px; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(–arctig-white); border-bottom: 2px solid var(–arctig-brand-red-hover); width: 30%; } .arctig-compat-thead-app { background: var(–arctig-brand-red); text-align: left; padding: 13px 20px; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(255,255,255,0.82); border-bottom: 2px solid var(–arctig-brand-red-hover); width: 38%; } .arctig-compat-thead-rating { background: var(–arctig-brand-red); text-align: center; padding: 13px 20px; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(255,255,255,0.82); border-bottom: 2px solid var(–arctig-brand-red-hover); width: 32%; } .arctig-compat-cell-alloy { padding: 13px 20px; font-weight: 600; font-size: 0.875rem; color: var(–arctig-text-dark); font-family: var(–arctig-font-data); border-bottom: 1px solid var(–arctig-border-light); background: var(–arctig-bg-card); } .arctig-compat-cell-app { padding: 13px 20px; font-size: 0.86rem; color: var(–arctig-text-muted); border-bottom: 1px solid var(–arctig-border-light); background: var(–arctig-bg-stripe); } .arctig-compat-cell-rating { padding: 13px 20px; text-align: center; font-size: 0.82rem; font-weight: 600; border-bottom: 1px solid var(–arctig-border-light); } .arctig-rating-best { color: var(–arctig-green-best); background: var(–arctig-green-bg); } .arctig-rating-recommended{ color: var(–arctig-amber-good); background: var(–arctig-amber-bg); } .arctig-rating-works { color: var(–arctig-blue-works); background: var(–arctig-blue-bg); } .arctig-rating-avoid { color: var(–arctig-red-avoid); background: var(–arctig-red-bg); } /* ── COMPARISON TABLE ─────────────────────────────────────── */ .arctig-compare-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; border-radius: var(–arctig-radius-lg); border: 1px solid var(–arctig-border-light); box-shadow: var(–arctig-shadow-card); } .arctig-compare-table { width: 100%; min-width: 500px; border-collapse: collapse; background: var(–arctig-bg-card); font-size: 0.875rem; } .arctig-cmp-thead-feature { background: var(–arctig-bg-alt); text-align: left; padding: 13px 18px; font-size: 0.72rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(–arctig-text-muted); border-bottom: 2px solid var(–arctig-border-mid); width: 28%; } .arctig-cmp-thead-er4043 { background: var(–arctig-brand-red); text-align: center; padding: 13px 18px; font-size: 0.78rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(–arctig-white); border-bottom: 2px solid var(–arctig-brand-red-hover); width: 36%; } .arctig-cmp-thead-er5356 { background: var(–arctig-bg-alt); text-align: center; padding: 13px 18px; font-size: 0.78rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(–arctig-text-muted); border-bottom: 2px solid var(–arctig-border-mid); width: 36%; } .arctig-cmp-cell-label { padding: 12px 18px; font-weight: 600; font-size: 0.86rem; color: var(–arctig-text-dark); border-bottom: 1px solid var(–arctig-border-light); background: var(–arctig-bg-card); } .arctig-cmp-cell-er4043 { padding: 12px 18px; text-align: center; font-size: 0.875rem; background: var(–arctig-brand-red-tint); border-bottom: 1px solid var(–arctig-brand-red-border); color: var(–arctig-text-dark); line-height: 1.45; } .arctig-cmp-cell-er5356 { padding: 12px 18px; text-align: center; font-size: 0.875rem; background: var(–arctig-bg-card); border-bottom: 1px solid var(–arctig-border-light); color: var(–arctig-text-muted); line-height: 1.45; } .arctig-cmp-value-mono { font-family: var(–arctig-font-data); font-size: 0.85rem !important; font-weight: 600; color: var(–arctig-brand-red) !important; } /* ── SPEC TABLE ───────────────────────────────────────────── */ .arctig-spec-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; border-radius: var(–arctig-radius-lg); border: 1px solid var(–arctig-border-light); box-shadow: var(–arctig-shadow-card); } .arctig-spec-table { width: 100%; min-width: 340px; border-collapse: collapse; background: var(–arctig-bg-card); font-size: 0.875rem; } .arctig-spec-thead-key { background: var(–arctig-brand-red); text-align: left; padding: 13px 20px; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.09em; text-transform: uppercase; color: var(–arctig-white); border-bottom: 2px solid var(–arctig-brand-red-hover); width: 36%; } .arctig-spec-thead-val { background: var(–arctig-brand-red); padding: 13px 20px; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.09em; text-transform: uppercase; color: rgba(255,255,255,0.78); border-bottom: 2px solid var(–arctig-brand-red-hover); } .arctig-spec-cell-key { padding: 12px 20px; font-weight: 600; font-size: 0.83rem; color: var(–arctig-text-body); background: var(–arctig-bg-alt); border-bottom: 1px solid var(–arctig-border-light); vertical-align: top; } .arctig-spec-cell-val { padding: 12px 20px; font-size: 0.875rem; color: var(–arctig-text-dark); background: var(–arctig-bg-card); border-bottom: 1px solid var(–arctig-border-light); line-height: 1.5; } /* ── IMAGES — original inline flow ───────────────────────── */ .arctig-image-row { margin-top: 32px; font-size: 0; line-height: 0; } .arctig-product-img { display: inline-block; width: 100%; max-width: 100%; vertical-align: top; } /* ── RESPONSIVE ───────────────────────────────────────────── */ @media (max-width: 640px) { .arctig-section-title { font-size: 1.1rem; margin: 36px 0 16px; } .arctig-compat-cell-alloy, .arctig-compat-cell-app, .arctig-compat-cell-rating, .arctig-compat-thead-alloy, .arctig-compat-thead-app, .arctig-compat-thead-rating, .arctig-cmp-cell-label, .arctig-cmp-cell-er4043, .arctig-cmp-cell-er5356, .arctig-cmp-thead-feature, .arctig-cmp-thead-er4043, .arctig-cmp-thead-er5356 { padding: 10px 12px; font-size: 0.8rem; } }
Compatible Aluminum Alloys for ER4043
| Aluminum Alloy | Typical Applications | ER4043 Compatibility |
|---|---|---|
| 6061-T6 / 6061-T651 | Structural frames, extrusions, bike frames | Best Choice |
| 6063 | Architectural tubing, window frames | Best Choice |
| 3003 / 3004 | Sheet metal, tanks, cookware | Recommended |
| 5052 | Marine sheet, general fabrication | Works Well |
| Casting Alloys (355, 356, 214, 43) | Cast aluminum repair | Recommended |
| 5083 / 5086 / 5456 | Marine structural, high-magnesium alloys | Use ER5356 Instead |
ER4043 vs ER5356 — Which Aluminum Filler Rod Should You Choose?
| Feature | ER4043 — This Product | ER5356 |
|---|---|---|
| Best For | 6061, 6063, 3xxx series, aluminum castings | 5xxx series, marine, structural applications |
| Weld Pool Control | Smooth and fluid, easy to control | Slightly thicker weld pool |
| Hot Crack Resistance | Excellent for 6xxx alloys | Lower when welding 6xxx alloys |
| Weld Appearance | Bright, smooth, shiny finish | Slightly dull or frosty appearance |
| After Anodizing | Weld area may appear darker | Better color match with base metal |
| High-Temp Service (>150°F / 66°C) | Acceptable | Not recommended |
| Tensile Strength | ~186 MPa | ~241 MPa (Higher strength) |
ER4043 Aluminum TIG Filler Rod Specifications
| Specification | Details |
|---|---|
| AWS Classification | ER4043 · AWS A5.10 / ASME SFA A5.10 |
| Also Known As | AlSi5 · 4043 Aluminum Filler Rod |
| Silicon Content (Si) | 4.5 – 6.0% |
| Available Diameters | 1/16″ (1.6 mm) · 3/32″ (2.4 mm) · 1/8″ (3.2 mm) |
| Rod Length | 16 in (406 mm) |
| Package Weight | 5 lb |
| Shielding Gas | 100% Argon · Argon/Helium Mix |
| Welding Process | GTAW (TIG Welding) |
| Storage Recommendation | Store in sealed plastic tube and keep dry |

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