Iron Man's primary powers come from his armored suit.
Suiting up the Iron Armor
The armor used to require several machines to put on the suit, in a lengthy process. Later, this was changed to having it in a suitcase, which shortened the suiting up time, but was not very effective on the battlefield. However, recently, it has been shown that Stark can hold the armor within himself, and use it when needed, and spring into action in mere seconds.
He is capable of lifting up to 100 tons when wearing his armor and can achieve higher levels of strength when powered by a sufficient source.
Even when not traveling for extended distances, the armor enables the wearer to move and react at high speeds.
The armor can typically reach speeds in excess of Mach 8, in recent comics however Iron Man has been depicted as able to reach orbital velocities (5 miles per second) and up to speeds that can outrun black holes. Use of the jet boots provide enough power to lift a load of about 500 tons.
The armor is powered by a combination of solar converters, electrical batteries and an on-board generator that uses beta particle absorption as a fuel source. Not to mention the arc reactor that also powers the suit.
Energy Conversion Power Recharge
The armor is also able to absorb and convert nearby or fare away energy sources, such as heat or kinetic energy or energy from the planet itself into electricity, or even drain energy directly into the batteries for recharge.
Self-Contained Life-Support System & Environmental Protection
The armor can be completely sealed for operations in vacuum or underwater, providing its own life support, and is shielded against radiation.
The armor can generate magnetic fields to pull or push metal objects at will.
The armor has an internal onboard computer operating system that aids Stark in providing strategies, background information on opponents, surroundings, the status of the suit, and prevents a lock on from targeting systems.
Known sensors include radar/lidar, night vision, and physiological/medical scans that allow Stark to take and monitor the vitals of other people, including heart and brain scans. These scans also provided Stark with real-time personal physiological data. They are also capable of an all-environmental scan for atmospheric content or life forms--including astral energy projections.
When required, armor systems including strength amplification, durability amplification, and repulsor intensity can be greatly increased, by bypassing safety circuits and limiters. However, there is a chance that this can result in a complete system failure of the armor. An example of this mode is when Iron Man easily lifted a 16,000 ton Nuclear Reactor, and flew into the sky and threw it into the sea. It seems that he utilized this resource on the Hulk once, as the armor ends up completely inert . The range of the Override can be controlled as only reaching his very limit and staying at it for a long time will cause a system failure. This range goes from a safe 800% to 3200%, up to a very dangerous 5000%.
Crystallized Iron Armor
The armor has evolved from a bulky iron suit to a molecularly aligned matrix of crystallized iron enhanced by magnetic fields over layers of other metals like titanium, creating a shell that is pliable, yet capable of amazing resilience and protection.
His armor is very durable, capable of withstanding tremendous amounts of punishment. It can withstand high caliber bullets with ease. He can also withstand rockets, missiles, torpedoes, high powered lasers, and such, taking little to no damage. Future armors were fully resistant against electricity, fire, heavy impacts, energy blasts, take zero Kelvin and up to the Suns temperatures, even some of Thor's attacks(see Thorbuster). The suit can withstand almost unlimited kinetic and thermal impact, as well as most forms of radiation thanks to its refractory coating. The armor can survive anything short of a nuclear explosion at ground zero. The suit automatically protects its wearer when he enters an intrinsically hostile environment, such as outer space or deep sea. The armor even has specialized circuitry that guards against telepathic attacks. Tony is very confident in his suit's defensive abilities, when he was caught in a nuclear explosion, he was only thinking about women and completely forgot about what was happening around him.
Energy shielding that can protect the user from harm. It is also capable of reflecting attacks and staying mobile. At 2% power, the shield is strong enough to withstand a nuclear explosion.
The armor's primary energy weapon. A particle beam weapon, standard equipment in the palm gauntlets; can repel physical and energy-based attacks, traveling as a single stream or as a wide-field dispersal. It's damage potential is extremely lethal, from being able to go through 2 inches of steel like paper to blasting a hole through a mountain. They can be powered up to make a larger beam or a Full Form Repulsor Ray, which does 360 degrees of attacks. The power of the Repulsor Beams can range from the basic ones such as the one from the Mark 3, which fires 2 gigawatt beams, to the beams on a much further model of the suit such as the Model 27 which fires beams in the high petawatt region, but those require a little assistance from outside.
A powerful searchlight, capable of projecting beams in virtually every light spectrum. Also used as a powerful weapon that can destroy anything in its path. It fires a boosted form of the Monobeam with some Arc Reactor energy backing it up.
Standard lasers that can be used as weapons or for welding.
Extremely powerful plasma discharges that propagate in strength over distance, but implode if they get overloaded.
Based on the same design Tony Stark used to build Captain America's energy shield, this laser sword, emitted from his left arm, could also be flattened into a shield on his hands, or spread over the entire armor to encase the armor in a protective covering.
Pulse Barrage is one of Iron Man's standard long range attack. Because of its extremely low energy consumption, Pulse Barrage can be a very effective attack. an upgraded Red Pulse Barrage has the ability to penetrate through foes hitting others behind them, and the ability to ricochet off walls hitting more targets.
The Smart Missile is one that can target the weak points of a structure, object, or foe to inflict maximum damage with minimal payload.
This version of the Unibeam runs on direct power from the Arc Reactor, draining it's energy rapidly if not fully charged. It has considerable knockback.
As the name implies, the Multi-beam can fire multiple energies at the same time. Generally used with the energy that Tony Stark has absorbed.
The Pentabeam has microwave lensing that allows for directed beams of high joule electrons, protons, acoustic energy, and neutrons.
Rather then only firing beam type attacks, the Omnibeam can generate heats at 25232 degrees Fahrenheit, extremely powerful lights causing irreversible blindness in the enemy, and emit ultrasonic attacks capable of stunning even superhumanly durable foes and even causing disintegration. The other way the Omnibeam is fired, is by absorbing or draining any energy in Iron Man's vicinity, drawing it into his chest reactor, and converting it into billions of petawatts and firing it.
The program Hyper-velocity allows Tony to think and move at a much faster time frame then everyone else, allowing for quicker attacks. Also, it could create an electrical bubble if Tony is going fast enough.
A plasma discharge is given off when the suit comes into contact with Vibranium.