There is no single number. Continuous service temperature depends on the construction, the fluid inside the hose and how it is routed - so here is how to get a figure that actually applies to your car.
A plain single-wall hose can, especially when it is hot and soft. If the hose you are replacing sits on the suction side of the system, that one detail decides whether the replacement lasts.
Match the construction to the job: plain silicone for coolant and low-demand air, multi-layer reinforced for boost, fluorosilicone-lined where fuel or oil is present, wire-reinforced where vacuum collapse is a risk.
Some do. A stainless steel wire helix resists collapse, which is what you want on the suction side of a system where a plain hose can flatten under vacuum.
Nomex is a heat-resistant aramid layer built into the hose wall. Burst strength comes from the reinforcement layers - and the combination stops the hose ballooning under boost.
Standard silicone handles heat well and stays flexible, but it swells when it meets fuel, oil or solvent. Fluorosilicone adds a fluorinated polymer that resists those fluids - at a cost.
MIG deposits faster and suits thicker material, but on thin-wall tube and perforated cores its heat input is harder to control - so burn-through and internal spatter become more likely.
