Yes, it is a aircraft grade - a variation of type 347 stainless steel.
S130 - 0.08% max C, 0.20-1.00 % Si, 0.50-2.00% Mn, 0.035 % P, 0.025 % S, 17.00-19.00 % Cr, 8.00-11.00 % Ni, 10xC min Nb, other Mo
Similar metals
347-S17 (EN58 F/G)
AFNOR Z26CNNb 18-11
AISI 347/ SAE 30347
AMS 5646
MIL-S-862B 347
MIL-S-27419 347
WS 1.4550 XCrNiNb18 9