Frequently Asked Questions

NHML specializes in mechanical testing, failure analysis, chemical analysis, and metallography. Please contact us for more details as to how we can help meet your specific materials testing needs.

How large a sample is required for testing?

• Answer: For special items or if a limited amount of material is available, please contact NHML first.

  Type of Testing	Sheet 1	Plate 1	Angle	Bar	Pipe	Tubing
  Chemical 2	2" x 2"	2" x 2"	2" Long	2" Long	2" Long	2" Long
  Tensile	2"W x 12"L	Note 3	12" Long	6" Long Note 4	Note 5	12" Long
  Hardness	2" x 2"	2" x 2"	2" x 2"	2" Long	2" Long	2" Long

  
  

  Note:

  1. Plate up to ¾" thick requires 2"W x 18"L; Plate greater than ¾" thick requires 2"W x 6"L
  2. Bar or wire under ¼" diameter requires 18" Long
  3. Pipe up to ¾" wall thickness requires 12" Long; Pipe greater than ¾" wall thickness requires 6" Long
  4. Grain direction is very important when submitting sheet or plate for testing. Always mark grain direction with an arrow.
  5. When performing chemical analysis only, supply the above referenced size coupon. If other testing is to be performed (i.e. tensile, flattening, etc.), a separate piece for chemical analysis is not needed.

How long will a test take to perform?

• Answer: In most instances, within five working days. Expedited delivery is available.

Do we do X-Ray testing?

• Answer: NHML does not perform non-destructive tests such as Radiography, Dye Penetrant, or Magnetic Particle Inspection. However, we will be pleased to recommend someone in your area.

Can we perform on-site testing?

• Answer: Yes, in some instances. Please contact NHML for confirmation.

Does NHML do environmental testing?

• Answer: Contact us for special analyses such as incinerator ash, tank residues, and research samples. For routine environmental testing, check the Yellow Pages under "Laboratories, Environmental".

What forms of billing does NHML accept?

• Answer: We accept checks, credit cards, and direct deposit. Please call NHML with further questions.

News

• April 2, 2008 - Passivation featured in the latest edition of NHML's Nuts & Bolts
• April 2, 2008 - Glass Vial Sprinkler Accidents featured in the latest edition of NHML's Nuts & Bolts
• January 2008 - Passing of the hands - Tim Kenney, President/CEO acquired full ownership of New Hampshire Materials Laboratory on January 8, 2008. Senior Scientist, Fred Hochgraf remains an active participant here at NHML
• January 18, 2008 - Important Customer Notice: For your convenience NHML now accepts American Express, Discover Card, MasterCard & Visa.
• October 5, 2007 - Testing for Toxic Lead May Not Be Your Only Concern
• May 21, 2007 - Embrittlement of Steels featured in NHML's Nuts&Bolts newsletter
• December 20, 2006 - NHML launches new Web site
• May 1, 2006 - Hydrolysis of Fiberglass featured in the latest edition of NHML's Nuts & Bolts

All News >>

Related Materials

• Chemical Testing and Analysis
• Failure Analysis
• Mechanical Testing and Analysis
• Metallography
• Professional Services

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