Itandukaniro hagati ya ASTM A249 A270 A269 na A213 Ibyuma bitagira umuyonga

ASTM A269 ni ibisobanuro bisanzwe byerekana ibyuma bitagira umuringa kandi bisudira byitwa austenitis ibyuma bidafite ibyuma byangiza ruswa muri rusange birwanya ruswa kandi bitanga ubushyuhe buke cyangwa hejuru yubushyuhe bwo hejuru. ASTM A213 ni ibisobanuro bisanzwe byerekana ferritic na austenitis alloy-ibyuma bitetse, superheater, hamwe noguhindura ubushyuhe.Itandukaniro riri hagati ya A269, A249, na A213 riri mubipimo byihariye bagereranya kubyuma bidafite ingese.

STANDARD ASTMA249 ASTM A269 ASTMA270 ASTM213

Bisanzwe Ubworoherane bwo hanze ya Diameter
(mm)
Ubunini bw'urukuta (%) Ubworoherane Burebure (mm)
ASTM A249 <25.0 +0.10 -0.11 ± 10%     
≥25.0-≤40.0 ± 0.15
> 40.0- <50.0 ± 0.20 OD <50.8 + 3.0-0.0
≥50.0 ~ <65.0 ± 0.25     
≥65.0- <75.0 ± 0.30
≥75.0 ~ <100.0 ± 0.38 OD≥50.8 + 5.0-0.0
≥100 ~ ≤200.0 +0.38 -0.64     
> 200.0-≤225.0 +0.38 -1.14
ASTM A269 <38.1 ± 0.13   
≥38.1 ~ <88.9 ± 0.25
≥88.9- <139.7 ± 0.38 ± 15.0% OD <38.1 + 3.2-0.0
≥139.7 ~ <203.2 ± 0.76 ± 10.0% 0D ≥38.1 + 4.0-0.0
≥203.2- <304.8 ± 1.01
≥304.8- <355.6 ± 1.26
ASTMA270 ≤25.4 ± 0.13 ± 10% + 10-0.0
> 25.4-≤50.8 ± 0.20
> 50.8 ~ ≤62 ± 0.25
> 76.2- ≤101.6 ± 0.38
> 101.6 ~ <139.7 ± 0.38
≥139.7–203.2 ± 0.76
≥203 2 ~ ≤304.8 ± 1.27
ASTM213 D < 25.4 ± 0.10 +20/0 + 3.0 / 0
25.4 ~ 38.1 ± 0.15
38.1 ~ 50.8 ± 0.20
50.8 ~ 63.5 ± 0.25 22/0 + 5.0 / 0
63.5 ~ 76.2 ± 0.30
76.2 ~ 101.6 ± 0.38
101.6 ~ 190.5 + 0.38 / -0.64
190.5 ~ 228.6 + 0.38 / -1.14

Igihe cyo kohereza: Jun-27-2023