Norm

ASTM A304-11

Standard Specification for Carbon and Alloy Steel Bars Subject to End-Quench Hardenability Requirements

86,84

Over deze norm

Status Definitief
Aantal pagina's 48
Commissie A01.15
Gepubliceerd op 01-10-2011
Taal Engels

1.1 This specification covers hot-worked alloy, carbon, and carbon-boron steels in a variety of compositions and sizes, which may attain specified depth of hardening in the end quench test. These steel compositions are identified by the suffix letter H added to the conventional grade number.

1.2 This specification provides for analyses other than those listed under Tables 1 and 2. Special hardenability limits are also permissible when approved by the purchaser and manufacturer.

1.3 The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this standard.

TABLE 2 Chemical Requirements of Carbon H-SteelsA

UNS DesignationB
Grade Designation
Chemical Composition, %
Carbon
Manganese
Phosphorus,
max
Sulfur,
max
Silicon
H 10380 1038 H0.340.430.501.00 0.0400.0500.150.35
H 10450 1045 H0.420.510.501.00 0.0400.0500.150.35
H 15220 1522 H0.170.251.001.50 0.0400.0500.150.35
H 15240 1524 H0.180.261.251.75 0.0400.0500.150.35
H 15260 1526 H0.210.301.001.50 0.0400.0500.150.35
H 15410 1541 H0.350.451.251.75 0.0400.0500.150.35
H 15211C15B21 HC0.170.24 0.701.200.0400.050 0.150.35
H 15351C15B35 HC0.310.39 0.701.200.0400.050 0.150.35
H 15371C15B37 HC0.300.39 1.001.500.0400.050 0.150.35
H 15411C15B41 HC0.350.45 1.251.750.0400.050 0.150.35
H 15481C15B48 HC0.430.53 1.001.500.0400.050 0.150.35
H 15621C15B62 HC0.540.67 1.001.500.0400.050 0.400.60
Correction made editorially

A Standard H Steels can be produced with a lead range of 0.150.35 %. Such steels are identified by inserting the letter L between the second and third numerals of the grade designation, for example, 15L22 H. Lead is generally reported as a range of 0.150.35 %.

B New designations established in accordance with Practice E527 and SAE J 1086, Recommended Practice for Numbering Metals and Alloys (UNS).

C These steels can be expected to have 0.0005 % min boron content.

Details

ICS-code 77.140.60
Nederlandse titel Standard Specification for Carbon and Alloy Steel Bars Subject to End-Quench Hardenability Requirements
Engelse titel Standard Specification for Carbon and Alloy Steel Bars Subject to End-Quench Hardenability Requirements

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