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ER70S-2 TIG rods are a common filler for mild and carbon steel because their deoxidizers (titanium, zirconium and aluminum) help with light mill scale. Pick .045″ or 1/16″ for thin sheet and practice, and 3/32″ for medium-thickness steel. This guide compares ten ER70S-2 TIG rods on Amazon by diameter and pack size.
Top Picks
| Category | Product | Best For |
|---|---|---|
| Best Overall ER70S-2 TIG Rod | Check price on Amazon | General mild steel TIG work |
| Best Copper-Coated TIG Rod | Check price on Amazon | Regular shop use |
| Best Small-Diameter TIG Rod | Check price on Amazon | Thin mild steel projects |
| Best Compact Weldcote Pack | Check price on Amazon | Precision filler control |
| Best Mid-Size Shop Pack | Check price on Amazon | Routine fabrication |
| Best For Beginners | Check price on Amazon | Practice and light repairs |
| Best 3/32 Rod For Heavier Steel | Check price on Amazon | Frames, gates, and thicker joints |
| Best Bulk 1/16 Pack | Check price on Amazon | Frequent shop use |
| Best 3/32 Small Pack | Check price on Amazon | Repair and fabrication work |
| Best Bulk Multi-Size Option | Check price on Amazon | Stocking a busy shop |
What This List Covers
This list covers only straight ER70S-2 TIG filler rods for mild and carbon steel, in common diameters (.045″, 1/16″, 3/32″) and pack sizes. Accessories, helmets and welders are left out. Product details come from the Amazon listings, so check the pack size, diameter and packaging there before you order.
Quick Buying Guide
- Choose .045″ or 1/16″ for thin sheet, practice, small repairs, and precise filler control.
- Choose 3/32″ for medium-thickness mild steel, frames, gates, brackets, and general fabrication.
- Buy bulk packs only if you weld regularly and can store rods in a clean, dry container.
- Inspect packaging on arrival — loose or damaged packaging can expose rods to moisture and contamination.
The 10 ER70S-2 TIG Rods Compared
This rod follows AWS ER70S-2 specs, so you get consistent puddle behavior and reliable strength when your base metal and settings are correct. The deoxidizers help when light mill scale is present, but always clean the joint first for best results.
Pick this if you want one versatile 1/16″ rod you can use across most mild steel jobs. Skip it if you only need a tiny practice pack or cannot store larger quantities cleanly.
Key Benefits
- Triple deoxidized chemistry helps reduce porosity
- Multiple pack sizes fit both small jobs and shop stocking
- 36″ length works with most TIG torches
- Good balance of control and filler volume
The 6 lb pack gives you a solid supply for regular shop use without jumping to full bulk. The copper finish can make handling smoother, especially when running multiple joints in one session.
Pick this if you weld several times a week and want convenient mid-size packaging. Skip it if you only weld occasionally and prefer a smaller tube.
Key Benefits
- Copper-coated for smoother handling
- Practical 6 lb pack for regular shop use
- Consistent 1/16″ diameter
- Designed for clean TIG welds on mild and carbon steel
The smaller diameter makes it easier to avoid overwelding on thin sheet and brackets. Still delivers the same deoxidized chemistry that helps when surfaces aren’t perfect.
Pick this if you work on thinner material and want precise filler control. Skip it if your main work involves thicker joints that need more filler volume.
Key Benefits
- Excellent for thin material and controlled filler input
- Triple deoxidized chemistry reduces porosity risk
- Multiple pack size options available
- 36″ length fits most TIG setups
The small 1 lb tube keeps things simple for occasional users and reduces waste. Clean packaging helps protect the rods until you’re ready to weld.
Pick this if you want a small, protected pack for practice or light repairs. Skip it if you need enough rod for daily shop use.
Key Benefits
- Compact 1 lb pack reduces waste for occasional use
- Clean, protected packaging
- Precise .045″ diameter for thin material
- Easy to store
The 5 lb pack is large enough for regular shop use without committing to a full bulk order. 3/32″ diameter adds filler faster on medium-thickness joints than thinner rods.
Pick this if you do a mix of shop repairs and small production work. Skip it if you mostly weld thin sheet and need finer control.
Key Benefits
- Good balance of control and filler volume
- 5 lb pack suits regular shop use
- Consistent performance on mild steel
- Practical size for most fabricators
The sealed 1 lb tube keeps rods clean and makes storage easy. 1/16″ diameter gives beginners more control than larger rods on lighter projects.
Pick this if you’re learning TIG or doing light repairs. Skip it if you need bulk stock for daily shop use.
Key Benefits
- Protected packaging keeps rods clean
- 1/16″ diameter supports controlled filler use
- Great starter pack for learning TIG
- Easy to store and handle
The 3/32″ size adds filler faster on thicker joints while still offering reasonable control. Deoxidizers help when surfaces aren’t perfectly clean.
Pick this if your projects often involve medium to heavier mild steel. Skip it if you mainly weld thin sheet.
Key Benefits
- Good filler volume for medium and heavier joints
- Triple deoxidized chemistry supports cleaner fusion
- 5 lb box practical for regular shop use
- Strong choice for frames and structural repairs
The reusable tube packaging is a practical advantage for busy shops. Large quantity makes sense only if you weld often and have proper storage.
Pick this if you weld frequently and want to stock up on 1/16″ rod. Skip it if you only need rods for occasional projects.
Key Benefits
- Large 10 lb quantity for frequent users
- Reusable tubes protect rods from contamination
- Convenient for continuous shop work
- Reduces need for frequent reordering
The protective tube keeps rods clean and ready. 3/32″ diameter gives you more filler volume than thinner rods while still being manageable.
Pick this if you want 3/32″ filler in a smaller, protected package. Skip it if you mainly need thin-sheet control from .045″ or 1/16″ rods.
Key Benefits
- Protective tube keeps rods clean
- Good filler volume for medium-duty work
- Compact 1 lb size for occasional use
- Convenient for repair and fabrication
The reusable container helps keep rods organized and protected. Large quantity suits high-volume shops that go through a lot of filler.
Pick this if you weld often and want bulk supply with good storage. Skip it if you only need a small starter pack.
Key Benefits
- Reusable container for cleaner storage
- Large 10 lb quantity for high-volume use
- Triple deoxidizers help reduce porosity
- Practical for busy shops
ER70S-2 TIG Rod Comparison Table
| Product Name | Image | Best For | Weight | Size | Material |
|---|---|---|---|---|---|
| Hy-weld ER70S-2 1/16″ TIG Rod Check price on Amazon |
 |
General mild steel TIG work | 5 lbs | 1/16″ | Mild Steel |
| PGN ER70S-2 1/16″ TIG Rod Check price on Amazon |
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Copper-coated option for shop use | 6 lbs | 1/16″ × 36″ | Mild Steel |
| Hy-weld ER70S-2 .045″ TIG Rod Check price on Amazon |
 |
Thin mild steel projects | 2 lbs | .045″ | Mild Steel |
| Weldcote .045″ ER70S-2 TIG Rod Check price on Amazon |
 |
Small-pack precision work | 1 lb | .045″ | Mild Steel |
| WeldingCity 3/32″ ER70S-2 TIG Rod Check price on Amazon |
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Routine fabrication | 5 lbs | 3/32″ × 36″ | Mild Steel |
| Weldcote 1/16″ ER70S-2 TIG Rod Check price on Amazon |
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Beginners and light repairs | 1 lb | 1/16″ × 36″ | Mild Steel |
| Startech 3/32″ ER70S-2 TIG Rod Check price on Amazon |
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Medium to heavier mild steel | 5 lbs | 3/32″ × 36″ | Mild Steel |
| Eastwood 10 lb 1/16″ ER70S-2 TIG Rod Check price on Amazon |
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Bulk 1/16″ shop supply | 10 lb | 1/16″ | Mild Steel |
| Weldcote 3/32″ ER70S-2 TIG Rod Check price on Amazon |
|
Small 3/32″ repair pack | 1 lb | 3/32″ × 36″ | Mild Steel |
| HYW 10 lb ER70S-2 TIG Wire Check price on Amazon |
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Bulk multi-size shop option | 10 lb | 1/8″ (multi available) | Mild Steel |
Related guides: TIG welding filler rod selection chart | mild steel TIG welding rods review | YESWELDER mild steel TIG welding rod review
FAQ
Which ER70S-2 TIG rod size should I choose?
Use .045″ or 1/16″ for thinner material and better filler control. Move to 3/32″ for medium-thickness mild steel and heavier repair work. Test on scrap with your planned amperage before welding the final part.
How clean do ER70S-2 TIG rods need to be?
Keep rods and base metal as clean as practical. ER70S-2 rods contain deoxidizers that help with light mill scale, but oil, heavy rust, paint, or moisture can still cause porosity and weak welds. Wipe oily surfaces with acetone and wire-brush rust before welding.
Can I use ER70S-2 for both TIG and MIG?
ER70S-2 chemistry is sold for more than one process, but this list covers TIG filler rods only. Check that the listing you choose is the straight-length TIG rod version before ordering.
Are ER70S-2 TIG rods good for rusty steel?
They can handle light mill scale or minor surface contamination thanks to the deoxidizers. Heavy rust, paint, oil, or moisture should still be removed before welding for best results.
Should beginners buy a small pack or a bulk pack?
Most beginners should start with a 1 lb or 2 lb pack. It’s cheaper upfront, easier to store, and lets you confirm the diameter works for your projects before buying larger quantities.
How to Choose Between These Rods
Start with diameter, then pack size and packaging quality. Choose 1/16″ for controlled puddles on general work, .045″ for thin material, and 3/32″ when you need more filler volume. Pay close attention to how rods arrive — clean, protected packaging makes a real difference in weld quality.
Wrapping Up
Choosing the right ER70S-2 TIG filler rod directly affects weld strength, appearance, and cleanup time. For thin material or practice, start with .045″ or 1/16″. For medium-thickness steel, consider 3/32″. For frequent shop use, a larger protected pack can save time and money.
Before buying, double-check the current pack size, diameter, and packaging on the Amazon listing. If you want the safest all-around starting point, go with a clearly labeled ER70S-2 TIG rod that matches your metal thickness and storage situation.
