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34 CrAINi 7 Application:Al-alloyed nitriding steel grade for large cross-sections. Suitable for piston rods, extruders, cylinders, gear wheels,
Category Type Steel grade Standard Country
Grades Special Alloy 34 CrAINi 7 DIN Germany

Chemical composition % of the ladle analysis of grade 34 CrAINi 7

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Mo(％) Al(%)
0.30 – 0.37 0.40 0.40 – 0.70 0.025 0.035 1.50 – 1.80 0.85 – 1.15 0.15 – 0.25 0.80 – 1.20
Al-alloyed nitriding steel grade for large cross-sections. Suitable for piston rods, extruders, cylinders, gear wheels, rings
Mechanical properties of grade 34 CrAINi 7
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)
898 (≥) 987 (≥) 22 23 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 341
Physical properties of grade 34 CrAINi 7
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
645 (≥) 376 (≥) 13 13 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 112
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2
234 257 531
34 CrAINi 7 Range of products
Product type Products Dimension Processes Deliver Status
Plates / Sheets Plates / Sheets 0.08-200mm(T)*W*L Forging, hot rolling and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting,
Coil / Strip Steel Coil /Steel Strip 0.03-16.0x1200mm Cold-Rolled & Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED

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