X8CrNiMoBNb16-16 - Cast Iron and Cast Steel

X8CrNiMoBNb16-16 Stainless Steels to DIN 17240 (1976)

DIN 17240 (1976) - Heat Resisting and Highly Heat Resisting Materials for Bolts and Nuts; Quality Specifications
DIN EN 10088-1 - Stainless steels - Part 1: List of stainless steels
DIN EN 10269 - Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties
WB 113/1 (2001) - Heat resistant austenitic rolled and forged steel, X 8 CrNiMoBNb 16 16, WN 1.4986
WB 113/2 (2001) - Heat resistant austenitic rolled and forged steel, CrNiMoBNb X 8 16 16, WN 1.4986

Heat Resisting and Highly Heat Resisting Materials for Bolts and Nuts

Elements	Min.（≥）	Max.（≤）
C	0.04	0.10
Si	0.30	0.60
Mn	-	1.50
P	-	0.045
S	-	0.030
Cr	15.5	17.5
Ni	15.5	17.5
Mo	1.60	2.00
B	0.05	0.10
Other	-	Nb / Ta ≥10*C ≤1.20

DIN 17240 (1976) Heat Resisting and Highly Heat Resisting Materials for Bolts and Nuts; Quality Specifications; Replaced by DIN EN 10269:1999

Proof strength R_p0.2 (MPa)	Tensile strength R_m (MPa)	Impact energy KV (J)	Elongation at fracture A (%)	Reduction in cross section on fracture Z (%)	As-Heat-Treated Condition	Brinell hardness (HBW)
181 (≥)	318 (≥)	31	24	12	Solution and Aging, Annealing, Ausaging, Q+T,etc	414

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
217 (≥)	246 (≥)	43	42	24	Solution and Aging, Annealing, Ausaging, Q+T,etc	411
Temp. °C/°F	Creep strain limit (10000h) (Rp1,0) N/mm2	Creep rupture strength (10000h) (Rp1,0) N/mm2
574	351	284

1 EN X7CrNiMoBNb16-16 2 1.4986 3 X8CrNiMoBNb16-16 4 X7CrNiMoBNb16-16

1 ESR 1.4986 Round Bar

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