ผลิตภัณฑ์โลหะ
เอกสารมาตรฐาน
ญี่ปุ่น
JSA
JIS G 5511:1991
Low thermal expansive Fe-alloy castings
1991
6
Std. JISf 2021 V.2
This Japanese Industrial Standard specifies the low thermal expansive fe-alloy castings, hereafter referred to as the "castings", having a mean coefficient of linear expansion of 7.0 x 10*-6/centigrade degrees or less within the range of 50 to 100 centigrade degrees.