0Cr25Ni20

0Cr25Ni20 Stainless Steels to GB 13296 (2007)

0Cr25Ni20 - Specification & Application

• GB 13296 (2007) - Seamless stainless steel tubes for boiler and heat exchanger
• GB 4238 (1992) - Heat-resisting steel sheets and plates
• GB/T 1220 (1992) - Stainless steel bars
• GB/T 1221 (1992) - Heat-resisting steel bars
• GB/T 12770 (2002) - Welded stainless steel tubes for machine structures
• GB/T 12771 (2000) - Welded stainless steel pipes for liquid delivery
• GB/T 14976 (2002) - Stainless steel seamless tubes for fluid transport
• GB/T 3280 (2007) - Cold rolled stainless steel sheets and plates
• GB/T 4226 (2004) - Cold finished stainless steel bars
• GB/T 4237 (1992) - Hot rolled stainless steel sheets and plates
• GB/T 4239 (1991) - Cold rolled stainless steel and heat resisting steel strips
• GB/T 4240 (1993) - Stainless steel wires
• GB/T 4356 (2002) - Stainless steel wire rods
• JB/T 6398 (2006) - Heavy stainless acid resistant and heat resistant steel forgings

Oxidation resistance is better than 0cr23ni13. Mostly used as heat resistant steel

Chemical composition(wt.%) of 0Cr25Ni20 grade: to GB 13296 (2007)

0Cr25Ni20 - Detail

0Cr25Ni20

Mechanical properties of grade 0Cr25Ni20 GB 13296 (2007)

Proof strength Rp0.2 (MPa)	Tensile strength Rm (MPa)	Impact energy KV (J)	Elongation at fracture A (%)	Reduction in cross section on fracture Z (%)	As-Heat-Treated Condition	Brinell hardness (HBW)
632 (≥)	862 (≥)	44	23	33	Solution and Aging, Annealing, Ausaging, Q+T,etc	424

Physical properties of grade 0Cr25Ni20 GB 13296 (2007)

Property	Density kg/dm3	Temperature T °C/F	Specific heat J / kgK	Thermal conductivity W/mK	Electric resistance µΩ·cm	Modulus of elasticity kN/mm2	Expansion rate
774 (≥)	583 (≥)	31	21	13	Solution and Aging, Annealing, Ausaging, Q+T,etc	433
Temp. °C/°F	Creep strain limit (10000h) (Rp1,0) N/mm2	Creep rupture strength (10000h) (Rp1,0) N/mm2
267	942	919