ASTM A 304 : 2011
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
Standard Specification for Carbon and Alloy Steel Bars Subject to End-Quench Hardenability Requirements
Hardcopy , PDF
11-11-2014
English
01-10-2011
Important note : Users cannot be edited or removed once added to your Multi user PDF.| Committee |
A 01
|
| DocumentType |
Standard
|
| Pages |
48
|
| PublisherName |
American Society for Testing and Materials
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
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 H | 0.34–0.43 | 0.50–1.00 | 0.040 | 0.050 | 0.15–0.35 |
| H 10450 | 1045 H | 0.42–0.51 | 0.50–1.00 | 0.040 | 0.050 | 0.15–0.35 |
| H 15220 | 1522 H | 0.17–0.25 | 1.00–1.50 | 0.040 | 0.050 | 0.15–0.35 |
| H 15240 | 1524 H | 0.18–0.26 | 1.25–1.75 | 0.040 | 0.050 | 0.15–0.35 |
| H 15260 | 1526 H† | 0.21–0.30 | 1.00–1.50 | 0.040 | 0.050 | 0.15–0.35 |
| H 15410 | 1541 H | 0.35–0.45 | 1.25–1.75 | 0.040 | 0.050 | 0.15–0.35 |
| H 15211C | 15B21 HC | 0.17–0.24 | 0.70–1.20 | 0.040 | 0.050 | 0.15–0.35 |
| H 15351C | 15B35 HC | 0.31–0.39 | 0.70–1.20 | 0.040 | 0.050 | 0.15–0.35 |
| H 15371C | 15B37 HC | 0.30–0.39 | 1.00–1.50 | 0.040 | 0.050 | 0.15–0.35 |
| H 15411C | 15B41 HC | 0.35–0.45 | 1.25–1.75 | 0.040 | 0.050 | 0.15–0.35 |
| H 15481C | 15B48 HC | 0.43–0.53 | 1.00–1.50 | 0.040 | 0.050 | 0.15–0.35 |
| H 15621C | 15B62 HC | 0.54–0.67 | 1.00–1.50 | 0.040 | 0.050 | 0.40–0.60 |
| †Correction made editorially | ||||||
A Standard H Steels can be produced with a lead range of 0.15–0.35 %. 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 0.15–0.35 %.
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.
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.