Statements (33)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:steel_classification_system
|
| gptkbp:class |
chemical composition
alloying elements carbon content |
| gptkbp:developedBy |
gptkb:American_Iron_and_Steel_Institute
|
| gptkbp:hasLetter |
three-digit code
|
| gptkbp:includes |
gptkb:AISI_1018
gptkb:AISI_1045 gptkb:AISI_304 gptkb:AISI_316 gptkb:AISI_4140 gptkb:AISI_420 gptkb:AISI_430 gptkb:AISI_4340 gptkb:AISI_52100 stainless steels tool steels alloy steels carbon steels |
| gptkbp:relatedTo |
SAE steel grades
|
| gptkbp:standardizedBy |
gptkb:SAE_International
gptkb:AISI |
| gptkbp:status |
partially replaced by SAE system
|
| gptkbp:usedBy |
gptkb:engineer
manufacturers metallurgists |
| gptkbp:usedFor |
identifying steel alloys
standardization of steel types |
| gptkbp:usedIn |
gptkb:North_America
|
| gptkbp:usedUntil |
early 20th century
|
| gptkbp:bfsParent |
gptkb:American_Iron_and_Steel_Institute
|
| gptkbp:bfsLayer |
6
|
| https://www.w3.org/2000/01/rdf-schema#label |
AISI steel grades
|