Would a 70w halogen bulb produce less heat than 60w normal bulb?

[cmb]

Halogens and ordinary incandescents operate at the same filament temperatures, around 3300K.

Dan MacIsaac, Gary Kanner, and Graydon Anderson. "Basic Physics of the Incandescent Lamp (Lightbulb). The Physics Teacher. Vol. 37 no. 10 (December 1999): 520-525:

It is extremely difficult to maintain an average temperature [of ordinary incandescents] higher than about 2900 K

OSRAM Sylvania:

The tungsten-halogen light is similar to conventional non-halogen incandescent light in that it employs a tungsten filament in a gas-filled, light-transmitting envelope and emits the same type of light. The major differences are that a trace of halogen vapor (e.g., iodine or bromine) is added to the inert fill gas, the gas pressure (7-8 ATM) and bulb temperature (250° C to 600° C) are much higher than in non-halogen lamps, and the bulb is made of fused quartz (silica, SiO2), high-silica glass or aluminosilicate “hard” glass to withstand the high operating pressures and temperatures. Lastly, there is a higher color temperature, 2800° K to 3400° K for standard halogen product.

http://www.sylvania.com/ConsumerProducts/AutomotiveLighting/Products/Halogen/HowHalogenWorks.htm

 

[Vanadium 50]

The OP is asking for us to OK something that is potentially unsafe. The only recommendation we can give to the OP is "don't do that."

Manufacturers of halogen bulbs that are designed to serve as a replacement for standard incandescent bulbs design those bulbs so that they can be used in general lighting service lamp sockets of the same wattage ratings as the original standard incandescent bulbs. No manufacturer would stand by the safety of putting a 70 watt halogen bulb in a lamp rated for a 60 watt bulb.

If anything, the OP should consider replacing a 60 watt standard incandescent with a halogen bulb of a slightly lower wattage (but same amount of light), or with a much lower wattage LED or compact fluorescent bulb.

V50, for the mentors.