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Most commonly utilized beryllium copper and is notable for exhibiting the highest strength and hardness compared to commercial copper alloys. Its strength and hardness is similar to that of steel. AMS4533 ultimate tensile and Rockwell hardness properties in a peak aged condition are in the 200 ksi range and RC 45 respectively (electrical conductivity 22% IACS minimum).
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When landing gear must deploy flawlessly at -50°C and satellite hinges can’t fail in orbit, engineers turn to AMS 4533. This beryllium-copper alloy blends 1.380 MPa tensile strength with 25% conductivity – all while staying non-sparking and corrosion-proof. Trusted on Mars rovers and F-35s because partial performance isn’t an option.
TECH SPECS: ENGINEERED TO AMS 4533 REV C
(Compliant with ASTM B196 / UNS C17200 / QQ-C-530B)
| Property | AMS 4533 (Age-Hardened) | Stainless 316 | Aluminum 7075 |
|---|---|---|---|
| Tensile Strength | 1.150–1.380 MPa | 580 MPa | 572 MPa |
| Conductivity (IACS) | 22–25% | 3% | 30% |
| Fatigue Strength | 480 MPa (10⁸ cycles) | 240 MPa | 160 MPa |
| Thermal Range | -196°C to 260°C | -100°C to 425°C (loses strength) | -70°C to 175°C |
| Rockwell Hardness | HRC 36–40 | HRB 95 | HRB 88 |
| Spark Resistance | 5star (AS/NZS 3580.3 certified) | 2 star | 3 star |
Certifications: AMS 4533 Rev C, ITAR/DFARS, AS9100. RoHS 3. REACH
4 UNMATCHED ADVANTAGES
Strength-to-Weight Champion
“Replaces steel springs at 65% weight savings – critical when SpaceX charges $5.000/kg for orbit.”
Conductivity Meets Endurance
“Carries 8X more current than stainless steel while surviving 50M cycles in Black Hawk helicopter actuators.”
Intrinsic Safety
“Non-sparking even in pure hydrogen – mandatory for aircraft fuel sensors and refinery tools (ATEX Cat 1).”
Lifetime Corrosion Resistance
“Laughs off salt fog, Skydrol fluid, and sulfuric acid. Zero failures in 20-year submarine battery springs (ASTM B117 compliant).”
HOW WE BUILD RELIABILITY
1 Vacuum Induction Melting
"Beryllium (1.8-2.0%) alloyed in oxygen-free chambers (<15 ppm impurities). Eliminates porosity for mission-critical parts."
2 Precision Forming
"Hot-rolled to ±0.005mm tolerances – thinner than a human hair for EMI/RFI shielding foils."
3 Solution Annealing
"Flash-quenched at 790°C to trap beryllium atoms in solid solution."
4 Age Hardening
"320°C for 3 hours: Nano-scale beryllium precipitates boost strength 300% without distortion."
WHERE IT DEFINES PERFORMANCE
| Industry | Critical Applications | Why AMS 4533? |
|---|---|---|
| Aerospace | Landing gear bearings, avionics springs | Stable across Arctic to desert extremes |
| Defense | Missile guidance fins, torpedo triggers | Non-magnetic & EMP-proof |
| Satellite | Solar array deployment arms | Zero cold-welding in vacuum |
| Medical | MRI collimators, surgical robotics | Biocompatible (ISO 10993-1) |
| Energy | Downhole sensor springs, reactor probes | Spark-proof in methane/air mixtures |
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