Crofer 22H Plate, 1.4755, SOFC, X1CrWNbTiLa22-2

Crofer 22H Plate, 1.4755, SOFC, X1CrWNbTiLa22-2
STEELMAX Steel Story

Crofer 22H 는 고체 산화물 연료 전지 (SOFC :
solid oxide fuel cells) 용 강재 입니다.

Crofer 22H Plate 는, Cr-Mn 산화 층으로, 900℃ 수준까지
표면의 안정성을 가지는 금속입니다.

낮은 열팽창계수 — low coefficient of thermal expansion
좋은 열전도성 — good electrical conductivity of the oxide layer

낮은 크롬 고갈율 — low rate of chromium vaporization
좋은 작업성 — ease of working and processing

좋은 크립강도 — good creep properties
고온 내산화성 — good corrosion resistance 성질입니다.

※ Creep strength (크리프 강도)
Stress to cause specified strain in specified loading period of
time at constant temperature.
For example, the stress causing strain 1%, 0.1%, 0.01% in 1000h.
일정 온도하에서, 규정된 부하 시간에 규정된 변형이 생기는 응력.
예를 들면 1000 시간에 1%, 0.1% 또는 0.01%의 변형이
생기는 응력이 사용됩니다.

※ Creep strength materials
Steels, nickel- or cobalt alloys with minimum 8% chromium, which are
characterized by good mechanical behaviour at temperature above 500℃
under long-range service condition ; i.e. primarily by creep strength
to 1% plastic strain or creep rupture strength during long-time stressing.

product	Thickness	Rp0.2	Rm
product	Thickness	MPa/ksi min	MPa/ksi, min
Strip	t≤16	390/65.6	560/81.2
Sheet plate	t≤16	390/65.6	520/75.4
Sheet plate	t＞16	390/65.6	490/71.1

Crofer®22H Plate, 1.4755, X1CrWNbTiLa22-2
Chemical composition (%)	Chromium (Cr)	20.0~24.0
	Iron (Fe)	balance
	Carbon (C)	0.030 max
	Nitrogen (N)	0.04 max
	Sulfur (S)	0.006 max
	Manganese (Mn)	0.80 max
	Silicon (Si)	0.10~0.60
	Aluminum (Al)	0.10 max
	Tungsten (W)	1.0~3.0
	Niobium (Nb)	0.20~1.00
	Titanium (Ti)	0.02~0.20
	Lanthanum (La)	0.04~0.20
	Phosphorus (P)	0.050 max
	Nickel (Ni)	0.50 max
	Copper 9Cu)	0.50 max