: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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