Hwɛ dade ne grade control table a ɛko tia ɔhyew .

Ɔhyew-Syans steel: Alloy steel a ɛda so ara tumi di agoru nkakrankakra wɔ tebea a ɛyɛ hyew kɛse mu, na abɛyɛ ade titiriw wɔ mfiridwuma fononoo, engine, gas turbines ne mfuw afoforo mu. Ɛsɛ sɛ egyina nnuru ne mfiri adesoa ahorow ano wɔ mmeae a ɛhɔ yɛ hyew a ɛyɛ den, enti nea ɛko tia nsɛe, oxidation a ɛko tia, ɔhyew ahoɔden ne ɔhyew a ɛyɛ den no ho hia kɛse. Akwan pii wɔ hɔ a wɔfa so kyekyɛ dade a ɛko tia ɔhyew mu, a ɔkwan a wɔtaa fa so ne sɛ wɔbɛkyekyɛ nneɛma a ɛwɔ mu ne nea wɔde di dwuma no mu. Low alloy heat resistant steel, medium alloy heat resistant steel ne alloy heat resistant steel a ɛkorɔn no yɛ nea wɔde di dwuma kɛse wɔ mfuw ahorow mu. Antioxide dade ne dade a ahoɔden wom, ɛwom sɛ ɛsono sɛnea wɔde di dwuma de, nanso di dwuma a ɛho nhia wɔ wɔn mfuw mu: Wɔde kan no di dwuma titiriw ma fononoo ne mfiri a ɛma ɔhyew kɔ soro de, nanso wɔde nea etwa to no di dwuma de gyina nneɛma a wɔde fa adesoa kɛse ano, te sɛ gas turbine nhama ne pistons .
Ɔhyew-wɔn a wɔko tia dade sɛnkyerɛnne sohwɛ pon .
Ɔhyew a ɛkorɔn a ɛko tia ɔhyew: te sɛ 1cr18ni9ti, 1cr23ni18,0cr18ni9,0cr26ni5mo2, ne nea ɛkeka ho.
Ɛba fam-Ɔhyew a ɛyɛ hyew-ɛko tia dade: te sɛ 09cupcrnia-70,09 cupba-65, ne nea ɛkeka ho.
Dadeɛ a ɛtumi gyina ɔhyew ano: te sɛ 1 Cr 13,2 Cr 13,3 Cr 13, ne nea ɛkeka ho.
Hydrogen a ɛyɛ hyew kɛse a ɛko tia dade: te sɛ 2 cr 25 N, 4 Cr 25 N, ne nea ɛkeka ho.
Ɔhyew Afoforo-Esistant Steel: te sɛ 0cr17ni4cu4nb, 0cr17ni7al, ne nea ɛkeka ho.
Dɛn ne dade a ɛko tia ɔhyew .
Austenitic Heat-Adeɛ a ɛtumi gyina ano: te sɛ TP304H, TP 321, TP347H, TP347HFG, ne nea ɛkeka ho.
Ferriite Ɔhyew a ɛko tia: te sɛ 0 cr 17, ne nea ɛkeka ho.
Alloy heat-a ɛyɛ den a ɛko tia: sɛ nhwɛso no, ma nneɛma te sɛ T5, T22, T23, T17, T5B, T9,09CRUSB, ne nea ɛkeka ho.
martensitic ɔhyew-ɛko tia dade: te sɛ T91, T92, ne nea ɛkeka ho.
Afoforo ahorow: te sɛ carbon dade betumi ayɛ bere ne bere mu sɛ ɔhyew{0}}a ɛko tia dade.
Ɔhyew{0}}dadeɛ a ɛko tia 2520 .
Heat resistant steel 2520 yɛ alloy austenitic stainless steel a ɛkorɔn a ɛwɔ ɔhyew a ɛyɛ den ne mfiridwuma mu ahoɔden, a wɔde di dwuma kɛse wɔ mfiridwuma mu wɔ ɔhyew ne nsɛe a ɛkɔ soro mu.
Wɔrentumi mfa carbon dioxide a ɛbɔ ho ban no nhyɛ dade a ɛko tia dade mu-ɛko tia.
Heat{0}}wɔde carbon dioxide gas ho banbɔ welding bɛweta dade a ɛko tia, nanso ɛsɛ sɛ wɔpaw ɔhyew a ɛne no hyia-ɛko tia dade welding waya.