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  • ASTM A304-11

ASTM A304-11

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

ASTM International, 10/01/2011

Publisher: ASTM

File Format: PDF

$47.00$94.00


Published:01/10/2011

Pages:48

File Size:1 file , 2 MB

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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
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