AWS Certification Prep - Getting Your First Stamp

A welder with a current AWS certification gets hired. A welder without one stands in line behind the welders who have one. That is not an exaggeration - on most union, structural, pipeline, and shop jobs, you do not touch the iron until you have either walked in with a current cert or passed the in-house test the company administers. Your first AWS certification is the single biggest credential gate between apprentice-level pay and journeyman-level pay, and this guide walks you through everything you need to know to pass it on the first try.

What AWS Certification Actually Means

The American Welding Society (AWS) is the primary standards body for welding in North America. AWS publishes the codes (D1.1 Structural Steel, D1.3 Sheet Steel, D17.1 Aerospace, and many more) and administers the certification programs that verify a welder can deposit sound weld metal using a qualified procedure on a test coupon in a specified position.

An AWS certification says exactly this: "on date X, this welder, under witnessed conditions, deposited a weld that passed visual inspection and mechanical testing in the following variables (process, position, base metal, filler metal, thickness, backing)." Any of those variables change enough and the certification no longer covers the new work - a welder certified on 3G plate in SMAW with 7018 is not certified to weld 6G pipe in GTAW with ER70S-2.

The Main Certifications You Will Pursue

AWS Certified Welder Program (CW)

The AWS CW program is the most portable welder certification in the US. A CW card is recognized across state lines, across shops, and across contractors. You test at an AWS Accredited Testing Facility (ATF) and the cert lives in the AWS database. Renewal is every 6 months by employer verification of continued welding activity - let it lapse and you have to retest.

The CW program covers several endorsement types:

• D1.1 Structural - the most common; tests to the AWS D1.1 code on plate coupons
• D1.5 Bridge - tougher, narrower use case
• D17.1 Aerospace - for aerospace structure, specific to GTAW on thin aluminum and steel
• Sheet Metal (D1.3) - for sheet-gauge materials

AWS D1.1 Qualification (Employer-Issued)

Most shops and contractors qualify welders in-house using AWS D1.1 as the governing code. The WPS (Welding Procedure Specification) and the test coupon are owned by the employer - if you leave the company, the cert leaves with the employer. This is not a portable CW card, but it is still a legal D1.1 qualification for that employer's work.

AWS D1.3 Sheet Steel

For welders who work primarily on sheet-gauge (up to 3/16 inch) carbon steel. Narrower variable set, different bend test, thinner coupons.

AWS D17.1 / Aerospace

Aerospace welding testing with tight tolerances, specified filler metals, and typically GTAW on thin aluminum or stainless. A specialty endorsement.

Positions Explained

Positions describe how the coupon is oriented during welding. They are coded by number and letter:

Plate Positions

• 1G - flat groove (plate horizontal, welding on top)
• 2G - horizontal groove (plate vertical, weld axis horizontal)
• 3G - vertical groove (plate vertical, weld axis vertical - uphill or downhill)
• 4G - overhead groove (plate horizontal, welding on bottom side)

Fillets use F instead of G:

• 1F - flat fillet
• 2F - horizontal fillet
• 3F - vertical fillet
• 4F - overhead fillet

Pipe Positions

• 1G - pipe horizontal, rotated (1G roll)
• 2G - pipe vertical, welded horizontally around
• 5G - pipe horizontal, fixed (no rotation) - welder goes over the top and under the bottom
• 6G - pipe at 45 degrees, fixed - combines every plate position into one weld

Position Coverage Rules (AWS)

A key economics point: higher positions qualify lower positions. If you certify in 3G (vertical), you are automatically qualified in 1G (flat) and 2G (horizontal) for the same process and material. If you certify in 4G (overhead), you cover 1G, 2G, and 4G - but not 3G. So to cover all plate groove positions, you test in 3G + 4G.

For pipe: 6G qualifies every pipe and plate position (1G, 2G, 3G, 4G, 5G, 6G). This is why 6G is the gold standard - one test, everything covered.

Backing vs Open Root

Test coupons come in two flavors:

• With backing (also called "backed" or "with backing strip") - a strip of metal tacked behind the joint that provides a target for the root pass. Easier - you can lay a heavier root without worrying about blow-through. Qualifies you only for welds made with backing.
• Open root (also called "without backing") - no backing strip; you weld the root pass onto the edges of the beveled plates with a specified land and root gap. Harder - requires controlling heat and puddle carefully. Qualifies you for both open-root and backed welds.

Takeaway: if you can pass an open-root test, always do so - open-root qualifies you for more work.

Test Coupon Prep

A typical AWS D1.1 test coupon for a 3G/4G groove:

• Two plates, 3/8 inch thick, 4 inches wide, 10 inches long
• 22.5-degree bevel on the mating edges (45 degrees included angle)
• 1/4-inch root opening (open-root) or 0 root (with backing)
• 1/8 inch land (for open-root)
• Backing strip 1 inch wide, 1/4 inch thick (if used)

Preparation:

1. Cut the bevel cleanly. Grind away slag and dross from any thermal cut. A clean 45-degree groove with parallel sides beats a ragged torch-cut groove every time.
2. Dress the land. File or lightly grind the land to the specified dimension. Uneven land is a top-three reason new welders fail open-root tests.
3. Set the root gap. Use a pair of filler rods, tack them in place to hold gap, then pull them. The gap must be uniform end-to-end.
4. Tack the plates. Two tacks at the ends, with the plates held on a strong-back so they do not cup when you weld. Tacks go INSIDE the coupon length (the end 1/2 inch gets cut off for bend-strap preparation, so tacks there are removed with the discard).
5. Stamp your ID. Most test facilities require the welder's stamp number on the coupon before welding begins.

Visual and Bend Test Acceptance

After welding, the coupon is visually inspected against AWS D1.1 accept/reject criteria (see the Weld Inspection guide). If VT passes, the coupon is machined into strap samples and bent in a guided bend jig.

Visual Acceptance

• No cracks of any kind
• No undercut beyond 1/32 inch (base metal under 1 inch)
• No overlap
• Porosity within D1.1 table limits
• Full root penetration (groove welds)
• Bead sequence visible and uniform
• Craters filled

Bend Test

The coupon is cut into two root-bend straps and two face-bend straps (or two side-bend straps for thicker coupons). Each strap is placed in a guided bend jig and bent to approximately 180 degrees around a mandrel. The convex surface is then inspected.

Acceptance: no single open discontinuity over 1/8 inch (3 mm), and the sum of all discontinuities on any one strap shall not exceed 3/8 inch (10 mm).

If any strap fails, you may be allowed one retest (facility-dependent). Two failed straps typically means retaking the entire test.

Practicing With Limited Gear

You do not need a professional booth to practice for a cert test, but you do need:

1. A welding machine that matches the test process. If you are testing in SMAW with 7018, you need an AC/DC stick welder capable of at least 180 amps. If you are testing in GMAW, you need a short-circuit MIG with argon/CO2 blend. If testing FCAW, an FCAW-capable machine with self-shielded or gas-shielded wire matching the test WPS.
2. The same electrode/filler the test uses. 7018 from the test facility WPS is not the same as 6013 from your hardware store. Buy exactly what the test calls for.
3. The same plate thickness. Practicing on 1/4 plate for a 3/8 test coupon burns money and teaches bad habits. Cut full-size coupons for practice.
4. A guided bend test jig (or access to one). Many community colleges and welding schools will let you run your own practice coupons through their jig for a small fee or free. Do at least 2 practice coupons per position, bend them, and inspect.
5. A position fixture. Cheap angle iron welded into a jig that holds the coupon in 3G or 4G is enough. Do not practice 3G flat on the bench and expect to pass 3G vertical.

Minimum practice before test day: 10 full coupons, all bent, at least 6 passed in the position you plan to test in. Fewer than that and you are gambling your $300 test fee on luck.

Finding a Test Facility

Options from cheapest to most expensive:

1. Community college welding program - often the cheapest ($150 to $400 per test including coupon prep). May not be an AWS ATF, but the cert may still be recognized locally.
2. Union training centers - for union members or sponsored apprentices. Free to low cost.
3. AWS Accredited Testing Facility (ATF) - issues portable AWS CW cards. Search at aws.org/certification/certified-welder for your nearest ATF. $400 to $800 per endorsement, worth every penny because the cert travels with you.
4. Employer in-house test - free, but the cert is employer-issued and non-portable.

Call ahead. Ask:

• What code do you test to? (D1.1, D1.5, etc.)
• What process? (SMAW, GMAW, FCAW, GTAW)
• What electrode/filler?
• What position(s) are available?
• Backing or open-root?
• What is the coupon size and prep?
• Do you provide the coupon, or must I bring one?
• Cost? Retest policy?

Renewal and Currency

AWS CW certification requires continued welding activity on the qualified process - your employer signs a renewal form every 6 months confirming you have welded in that process. Miss a renewal and you have to retest.

Employer-issued D1.1 certs follow the company's QC program, often 6 months of continued use and revalidated on change of variables.

Cost and Timeline

• AWS CW test - $400 to $800 per endorsement
• Community college test - $150 to $400
• Practice plates and electrodes - $100 to $300 for a reasonable prep run
• Timeline - 2 to 4 weeks of focused practice for a motivated welder with basic skills; 8+ weeks for a beginner. Do not schedule the test until your practice coupons pass bend tests consistently.

Day 1 Checklist (Test Day)

• Know the WPS cold - process, electrode, amps, volts, travel
• Coupon prep verified (bevel angle, land, gap)
• Filler/electrodes correct and dry (stick: rods baked per spec)
• Machine settings pre-checked on scrap
• Stamp/ID on the coupon
• Hood, gloves, PPE - test facility has rules about what they provide and what you bring
• Mentally walked through the full weld sequence (tack - root - hot - fill - cap)
• Arrived 30 minutes early, hydrated, not hungover

Your first AWS stamp is a door-opener for the rest of your career. Treat the test like an interview - prep obsessively, show up calm, execute the plan you rehearsed. The welders who fail are almost always the welders who thought they could wing it. The welders who pass are the ones who bent 10 coupons before they ever walked into the test booth.