SM-6 Blk I/IA vs Emad: Cost-Exchange Ratio & Combat Analysis
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2026-03-21
3 min read
Overview
This analysis compares the SM-6 Blk I/IA, a US Multi-role BMD/AAW system costing $4.9M per unit, against the Emad, an Iranian Guided MRBM costing $1.2M per unit. The cost-exchange ratio of 4.1:1 favors the attacker — meaning it costs the defender 4.1x more to intercept than the missile cost Iran to produce. At Operation Epic Fury burn rates of 6/day, the SM-6 Blk I/IA inventory of 750 units faces depletion in approximately 125 days. Multi-mission missile: anti-air warfare, ballistic missile defense, and anti-surface strike First Iranian MRBM with maneuverable reentry vehicle for precision guidance
Side-by-Side Specifications
| Dimension | Sm 6 Blk I Ia | Emad |
|---|
| Unit Cost |
$4.9M |
$1.2M |
| Cost-Exchange Ratio |
4.1:1 |
4.1:1 |
| Range |
Multi-role BMD/AAW |
1700 km |
| Inventory |
~750 |
~200 |
| Annual Production |
165/yr |
— |
| Role |
Multi-role BMD/AAW |
Guided MRBM |
| Manufacturer |
RTX/Raytheon |
Iran / IRGC |
| Fuel |
Solid rocket |
— |
Head-to-Head Analysis
Cost-Exchange Economics
The SM-6 Blk I/IA costs $4.9M per unit while the Emad costs just $1.2M, creating a 4.1:1 cost-exchange ratio. Unfavorable for the defender. The attacker has significant cost advantage.
The Emad has a 4.1:1 cost advantage over the SM-6 Blk I/IA. This asymmetry is a key factor in the conflict's economic sustainability.
Inventory & Depletion
Coalition forces have approximately 750 SM-6 Blk I/IA interceptors with annual production of 165 units. Iran maintains an estimated 200 Emad units. The SM-6 Blk I/IA is already 17% depleted vs operational requirements. At Operation Epic Fury burn rates of 6/day, the SM-6 Blk I/IA inventory of 750 units faces depletion in approximately 125 days.
Coalition holds an inventory advantage, but at 4.1:1 cost ratio, this is offset by economics.
Tactical Engagement
The SM-6 Blk I/IA engages the Emad during the flight phase. With 1700km range, the Emad can be launched from deep within Iranian territory, complicating launch detection. Triple mission. 200+ fired in Red Sea ops. Only dual AAW+BMD.
The SM-6 Blk I/IA is designed to counter threats like the Emad, but sustained engagement at 4.1:1 cost ratios creates long-term sustainability challenges.
Scenario Analysis
Mass salvo of Emad missiles
In a saturation attack using Emad systems, the SM-6 Blk I/IA battery would need to engage multiple targets simultaneously. At $4.9M per interceptor, a salvo of 2 Emad missiles would cost $2.4M to launch but $9.8M to intercept.
Emad
Extended conflict (30+ days)
Over 30 days of sustained combat, the SM-6 Blk I/IA inventory faces significant depletion pressure. Annual production of 165 units translates to just 0.5 per day — far below consumption rates during active operations. Meanwhile, Iran produces approximately 3.3 ballistic missiles and 6.7 drones per day.
Attacker (Iran) — production outpaces defender replenishment
Complementary Use
The SM-6 Blk I/IA should be integrated into a layered defense architecture, not relied upon as a standalone solution against Emad threats. Cost-effective lower-tier systems (Iron Dome at $80K, or Iron Beam laser at $2/shot) should handle cheaper threats when possible, preserving expensive SM-6 Blk I/IA interceptors for high-value targets.
Overall Verdict
The SM-6 Blk I/IA vs Emad matchup produces a 4.1:1 cost-exchange ratio favoring the attacker. For sustained conflict planning, interceptor production ramp-up and cost-reduction programs are critical to maintaining defensive capability.
Frequently Asked Questions
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