Steel Testing Labs in United States

(A2LA Cert. No. 1046.03) Revised 01/07/2026 Page 1 of 5 SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 FASTENAL COMPANY LABORATORY - TAIWAN No. 63, Dade 2nd Rd. Gangshan District, Kaohsiung City, TAIWAN R.O.C. Brad Partington

(A2LA Cert. No. 2745.01) 11/21/2024 Page 6 of 9 Test Type / Test Capabilities Test Method(s) Compatibility Continued Sealer/Adhesive Contamination ACT LabWI-350-21; GM Adhesive/Sealer (Pretreatment Process Co

(A2LA Cert. No. 1509.03) 05/20/2025 Page 4 of 34 Parameter/Equipment Range CMC2, 4 (±) Comments ULM3 – Length Parallelism Flatness Tailstock Force Up to 4 in (4 to 12) in (12 to 24) in Up to 4 in

(A2LA Cert. No. 0717.01) 09/11/2024 Page 2 of 7 Using the following test methods and specifications: AAMA (American Architectural Manufacturers Association) AAMA 624, 7.12 Voluntary Specification, Performance Requirements and T

(A2LA Cert. No. 3937.01) 01/05/2026 Page 7 of 8 Test Method(s): Test Description(s): Soils (continued) BS 1377-9, Section 2.21 Methods of test for Soils f

(A2LA Cert. No. 1366.02) 11/24/2025 Page 3 of 3 Test Method: Test Description: Masonry: ASTM C1314 Compressive Strength of Masonry Prisms ASTM C109 (Compression Only) Standard Test Method for Compressive Strength of Hydraulic Ceme

(A2LA Cert. No. 5669.14) REVISED 02/09/2024 Page 5 of 5 Test(s): Test Method(s): Corrosion (cont.): Detecting Detrimental Intermetallic Phase in Duplex Austenitic/Ferritic Stainless Steels ASTM A923 Method A and Method C Detect

(A2LA Cert. No. 1167.01) Revised 02/05/2025 Page 5 of 6 Parameter/Equipment Range CMC2, 4 (±) Comments Optical 3D Measuring System3, 5 – Steel Aluminum Non-Metal Steel Aluminum Non-Metal Steel Aluminum

(A2LA Cert. No. 0104.01) 06/10/2024 Page 1 of 2 SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 ELEMENT MATERIALS TECHNOLOGY CHICAGO 194 Internationale Boulevard Glendale Heights, IL 60139 Jeff Romain Phone: 630 221

(A2LA Cert. No. 6037.02) 06/27/2024 Page 2 of 2 Tests: Test method(s): Mechanical (continued) Inclusion Rating of Steel ASTM E45 Metallic Coating Thickness with SEM ASTM B748 Calibrating the Magnification of a

(A2LA Cert. No. 2525.01) Revised 03/20/2025 Page 1 of 2 SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 BARTA PRECISION GRANITE LLC 11670 Pekin Rd. Newbury, OH 44065 Robert S. Barta Phone: 440-729-4099 CAL

(A2LA Cert. No. 1363.01) 01/19/2026 Page 3 of 3 Test Method: Test Description: Steel (Shop & Field) (continued)1: AISC/RCSC Chapter 16.2, Section

(A2LA Cert. No. 5948.01) 11/04/2025 Page 2 of 2 Test: Test Method(s): Macrostructure (Cold Acid Etching Method Only)

(A2LA Cert. No. 1888.11) Revised 11/19/2025 Page 5 of 33 Parameter/Equipment Range CMC2, 5 (±) Comments Plain Ring Gages Up to 8 in (8 to 18) in (4.4 + 1D) µin (8.7 + 0.47D) µin

For the tests to which this accreditation applies, please refer to the laboratory’s Chemical Scope of Accreditation. Accredited Laboratory A2LA has accredited CHARTER STEEL SAUKVILLE MELTING Saukville, WI fo

(A2LA Cert. No. 6140.01) Revised 07/23/2025 Page 1 of 2 SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 ABSOLUTE CLARITY & CALIBRATION LLC 76 North Main St. Southington, CT 06489 Brent Neilsen Phone: 860-620-0615

(A2LA Cert. No. 3430.01) Revised 09/05/2025 Page 2 of 3 Test Method: Test Description: Charpy Impact (< 590) ft-lbs; (175 to -452) °F ASTM A370, E23; ASME IX; AWS B4.0; ASTM A923 Method B, ASTM A1084 Method B Chemical Analysis (S

(A2LA Cert. No. 7214.01) Revised 09/03/2025 Page 2 of 2 Test Method: Test Description: Aggregate: ASTM C29 Unit Weight & Voids in Aggregate for Concrete ASTM C40 Organic Impurities in Fine Aggregates for Concrete ASTM C117 Material F

(A2LA Cert. No. 1848.01) Revised 09/11/2025 Page 5 of 21 Parameter/Equipment Range4 CMC2, 4 (±) Comments Micrometers3 – Outside Inside Depth Up to 36 in (37 to 60) in Up to 40 in Up to 12 in

(A2LA Cert. No. 1078.01) Revised 2/20/2026 Page 10 of 63 Parameter/Equipment Range CMC2, 4 (±) Comments Sine Plates/Bars3 – Flatness/Parallelism & Parallelism Cylinder to Base Angle Calibration Center of Rol

(A2LA Cert. No. 0255.03) Revised 10/11/2024 Page 1 of 5 SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 AKRON RUBBER DEVELOPMENT LABORATORY, INC. 75 E. Robinson Avenue Barberton, Ohio 44207 Rick Behne Phone: 330-794- 66

(A2LA Cert No. 3883.01) 09/03/2025 Page 3 of 5 Description of Inspection Specifications/ Requirements Further Description of Inspection Activities Heating Systems BC 1704.25 (2014), BC 1705.31 (2022) Technical Practice 32 Heat

For the tests to which this accreditation applies, please refer to the laboratory’s Chemical Scope of Accreditation. Accredited Laboratory A2LA has accredited CHARTER STEEL CLEVELAND Cuyahoga Heights, OH for

(A2LA Cert. No. 1046.04) 10/08/2024 Page 1 of 4 SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 FASTENAL COMPANY LABORATORY - SHANGHAI Plant B, Building A5, No.3802 Shengang Road, Songjiang District,

(A2LA Cert. No. 2949.03) Revised 01/15/2026 Page 1 of 1 SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 MODERN INDUSTRIES, INC 1325 Ranchers Legacy Trail, Fort Worth, TX 76126 Kevin Polito kevin.polito@modernind.com M

(A2LA Cert. No. 2171.01) 02/10/2025 Page 2 of 36 Parameter/Equipment Range CMC2, 6, 8 () Comments Conductivity – Measuring Equipment Liquid ~1 µS/cm ~10 µS/cm ~100 µS/cm ~1000 µS/cm ~1413 µS/cm ~10 0

(A2LA Cert. No. 0823.01) 02/11/2025 Page 4 of 5 Test Method: Test Description: Masonry (continued): ASTM C140 Sampling and Testing Concrete Mason

(A2LA Cert. No. 0284.02) 08/30/2024 Page 1 of 2 SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 PROFESSIONAL SERVICE INDUSTRIES, INC. PORTLAND, OREGON DIVISION 6032 North Cutter Circle, Suite #480 Portland, OR 97217 Bethin

(A2LA Cert. No. 1046.01) Revised 09/16/2025 Page 2 of 5 Test Test Methods Fatigue Testing NASM 1312-11; ISO 3800 Stress Durability (Hydrogen Embrittlement) ASME B

(A2LA Cert. No. 1297.01) Revised 12/17/2024 Page 3 of 18 Parameter/Equipment Range CMC2, 4, 10 (±) Comments Protractors, Levels & Clinometers Up to 359° 6.0′′ Rotary tilting table Calipers3 Up to 12 in

(A2LA Cert. No. 2133.01) 08/26/2024 Page 2 of 25 Parameter/Equipment Range CMC2, 4 (±) Comments Height Gages3 (1 to 12) in (12 to 48) in (22 + 3.5L) µin (12 + 4.8L) µin Gage

(A2LA Cert. No. 1627.01) 10/14/2025 Page 9 of 24 Specific Type of Radio Equipment Cert. Ord. Ref., Art. 2, Para. 1 Japanese Test Method 5.6 GHz Band Low-Power Data Communication System Item 19-3-2 Schedule 45 Quasi-Millimet

(A2LA Cert. No. 1281.01) 02/05/2025 Page 1 of 1 SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 TC INDUSTRIES TEST CENTER 3703 S. Route 31 Crystal Lake, IL 60012 Ken Rueff Phone: 815 333 8343 MECHANICAL

(A2LA Cert. No. 3477.01) 11/12/2025 Page 7 of 11 Program Name Sample Matrix Techniques Used to Determine Assigned Values / Uncertainty 16. Food contact materials 16.1 Immigration test: Heavy metals in aqueous extract

(A2LA Cert. No. 0621.02) 09/18/2025 Page 1 of 1 SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 WESTMORELAND MECHANICAL TESTING & RESEARCH, INC. 221 Westmoreland Drive Youngstown, PA 15696 Charles Connors Jr.

(A2LA Cert. No. 1592.01) 08/22/2025 Page 1 of 10 SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 & ANSI/NCSL Z540-1-1994 ADVANCED TECHNOLOGY SERVICES 8201 N. University St. Peoria, IL 61615 James Scroggins Phon

(A2LA Cert. No. 1342.01) Revised 11/01/2024 Page 2 of 8 Parameter/Equipment Range CMC2, 4 (±) Comments Micrometers3 Up to 6 in Up to 12 in 70 µin 130 µin Gage blocks, length bar Dial Indicat

For the tests to which this accreditation applies, please refer to the laboratory’s Mechanical Scope of Accreditation. Accredited Laboratory A2LA has accredited CHARTER STEEL SAUKVILLE ROLLING DIVISION Saukvill

For the tests to which this accreditation applies, please refer to the laboratory’s Mechanical Scope of Accreditation. Accredited Laboratory A2LA has accredited CHARTER STEEL FOSTORIA PROCESSING PLANT Rising Su