ASTM-A370 Standard Test Methods and Definitions for Mechanical Testing of Steel Products

ASTM-A370 - 2017A EDITION - CURRENT -- See the following: ASTM-A318 ASTM-A330 ASTM-A344 ASTM-A359 ASTM-A443
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Standard Test Methods and Definitions for Mechanical Testing of Steel Products
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Scope

1.1 These test methods2 cover procedures and definitions for the mechanical testing of steels, stainless steels, and related alloys. The various mechanical tests herein described are used to determine properties required in the product specifications. Variations in testing methods are to be avoided, and standard methods of testing are to be followed to obtain reproducible and comparable results. In those cases in which the testing requirements for certain products are unique or at variance with these general procedures, the product specification testing requirements shall control.

1.2 The following mechanical tests are described:

 

Sections

               Tension

6 to 14

               Bend

15

               Hardness

16

                    Brinell

17

                    Rockwell

18

                    Portable

19

               Impact

20 to 30

               Keywords

32

1.3 Annexes covering details peculiar to certain products are appended to these test methods as follows:

 

Annex

     Bar Products

Annex A1

     Tubular Products

Annex A2

     Fasteners

Annex A3

     Round Wire Products

Annex A4

     Significance of Notched-Bar Impact Testing

Annex A5

     Converting Percentage Elongation of Round Specimens to
          Equivalents for Flat Specimens

Annex A6

     Testing Multi-Wire Strand

Annex A7

     Rounding of Test Data

Annex A8

     Methods for Testing Steel Reinforcing Bars

Annex A9

     Procedure for Use and Control of Heat-Cycle Simulation

Annex A10

1.4 The values stated in inch-pound units are to be regarded as the standard.

1.5 When this document is referenced in a metric product specification, the yield and tensile values may be determined in inch-pound (ksi) units then converted into SI (MPa) units. The elongation determined in inch-pound gauge lengths of 2 or 8 in. may be reported in SI unit gauge lengths of 50 or 200 mm, respectively, as applicable. Conversely, when this document is referenced in an inch-pound product specification, the yield and tensile values may be determined in SI units then converted into inch-pound units. The elongation determined in SI unit gauge lengths of 50 or 200 mm may be reported in inch-pound gauge lengths of 2 or 8 in., respectively, as applicable.

1.5.1 The specimen used to determine the original units must conform to the applicable tolerances of the original unit system given in the dimension table not that of the converted tolerance dimensions.

Note 1: This is due to the specimen SI dimensions and tolerances being hard conversions when this is not a dual standard. The user is directed to Test Methods A1058 if the tests are required in SI units.

1.6 Attention is directed to ISO/IEC 17025 when there may be a need for information on criteria for evaluation of testing laboratories.

1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Notes

Claudia's Notes:
ASTM-A370 test methods center on Ductile vs. Brittle Behavior.  Body-centered-cubic or ferritic alloys exhibit a significant transition in behavior when impact tested over a range of temperatures. At temperatures above transition, impact specimens fracture by a ductile (usually microvoid coalescence) mechanism, absorbing relatively large amounts of energy. At lower temperatures, they fracture in a brittle (usually cleavage) manner absorbing appreciably less energy. Within the transition range, the fracture will generally be a mixture of areas of ductile fracture and brittle fracture.

Keywords

bend test; Brinell hardness; Charpy impact test; elongation; FATT (Fracture Appearance Transition Temperature); hardness test; Izod impact test; portable hardness; reduction of area; Rockwell hardness; tensile strength; tension test; yield strength;; ICS Number Code 77.040.10 (Mechanical testing of metals); 77.140.01 (Iron and steel products in general)

To find similar documents by ASTM Volume:

01.01 (Steel--Piping, Tubing, Fittings)

01.02 (Ferrous Castings; Ferroalloys)

01.03 (Steel--Plate, Sheet, Strip, Wire; Stainless Steel Bar)

01.04 (Steel--Structural, Reinforcing, Pressure Vessel, Railway)

01.05 (Steel--Bars, Forgings, Bearing, Chain, Tool)

To find similar documents by classification:

77.040.10 (Mechanical testing of metals Mechanical testing in general, see 19.060 Mechanical testing of welded joints, see 25.160.40)

77.140.01 (Iron and steel products in general)

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Document Number

ASTM-A370-17a

Revision Level

2017A EDITION

Status

Current

Modification Type

Revision

Publication Date

Nov. 15, 2017

Document Type

Test Method

Page Count

50 pages

Committee Number

A01.13