Tiwb Dur Carbon Tymheredd Uchel

Oct 12, 2023

Mae cyfansoddiad cemegol pibellau dur di-dor tymheredd uchel fel arfer yn cynnwys cromiwm (Cr), molybdenwm (Mo) ac elfennau aloi eraill, a all wella ei wrthwynebiad tymheredd uchel a'i ymwrthedd cyrydiad. Mae'r union gyfansoddiad cemegol yn dibynnu ar y radd benodol a'r gofynion cymhwyso.

Gradd Dur	C	Si	Mn	S	P	Cr	Mo	V	Ti	B	W	Ni	Al	Nb	N
Gradd Dur	C	Si	Mn	S	P	Cr	Mo	V	Ti	B	W	Ni	Al	Nb	N
20G	0.17-0.23	0.17-0.37	0.35-0.65	0.015	0.025
20 MnG	0.17-0.24	0.17-0.37	0.70-1.00	0.015	0.025
25MnG	0.22-0.27	0.17-0.37	0.70-1.00	0.015	0.025
15MoG	0.12-0.20	0.17-0.37	0.40-0.80	0.015	0.025		0.25-0.35
20MnG	0.15-0.25	0.17-0.37	0.40-0.80	0.015	0.025		0.44-0.65
12CrMoG	0.08-0.15	0.17-0.37	0.40-0.70	0.015	0.025	0.40-0.70	0.40-0.55
15CrMoG	0.12-0.18	0.17-0.37	0.40-0.70	0.015	0.025	0.80-1.10	0.40-0.55
12Cr2MoG	0.08-0.15	Llai na neu'n hafal i 0.60	0.40-0.60	0.015	0.025	2.00-2.50	0.90-1.13
12Cr1MoVG	0.08-0.15	0.17-0.37	0.40-0.70	0.010	0.025	0.90-1.20	0.25-0.35	0.15-0.30
12Cr2MoWVTiB	0.08-0.15	0.45-0.75	0.45-0.65	0.015	0.025	1.60-2.10	0.50-0.65	0.28-0.42	0.08-0.18	0.002-0.008	0.30-0.55
10Cr9Mo1VNbN	0.08-0.12	0.20-0.50	0.30-0.60	0.010	0.020	8.00-9.50	0.85-1.05	0.18-0.25				Llai na neu'n hafal i 0.040	Llai na neu'n hafal i 0.040	0.06-0.10	0.03-0.07

High Temperature Carbon Steel Tube

High Temperature Carbon Steel Pipe