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MIL-T-6736, 4130 Tube, Aircraft Quality

2019-11-15T06:27:50+00:0011월 13th, 2019|

MIL-T-6736 Normalized, 4130 Tube, Aircraft Quality
STEELMAX Steel Story

MIL-T-6736 규정은 Alloy 4130 Chromium, Molybdenum 합금강재 규정으로
용접관 또는 Seamless 튜브 제품에 대한 Aircraft Quality 품질입니다.

MIL-T-6736 규정 제품은 Round, Rectangular or Square, Oval, Streamline
형상으로, 조건에 따라 Annealed, Normalized or Stress Relieving, QT 입니다.

MIL-T-6736 Tubing QT 열처리 하면 항복강도 100 ksi 이상의 높은 강도로
Chromium, Molybdenum 원소가 담금질성을 높여줍니다.

※ Stress Relieving(old name : stress relief annealing : 응력제거 어닐링(풀림)
Every piece of steel has an amount of internal stress caused
by steel production, machining, surface finish, heat treatment
and other processes.
During a heat treatment process the yield strength is reduced
to a lower level. If precision parts or complicated tools with
close tolerances, this deformation could cause problems.
In the case after rough machining and stress relieving is done
with a high degree of machining allowance.
After this process the internal stress is reduced by the parts deforming.
The standard process is slow heating up to 550~650℃, holding for
minimum 2 hours and finishing with a slow cooling in the furnace.

모든 철강재는 생산, 가공, 표면 마무리, 열처리와 기타 공정진행에서
내부 응력이 어느정도 쌓일 수 밖에 없고, 이런 내부 응력을 해소시키려고
적당한 온도로 가열하고 균열화한 후, 적절한 온도로 냉각함으로써
실질적인 조직의 변화없이 내부 응력을 줄이고자 시행하는 열처리를 말합니다.

※ Aircraft Quality Steel (AQ Steel : 항공기강 : 航空機鋼)
AQ Steel is the most commonly specified quality for general aerospace applications.
It is defined in SAE specification AMS 2301, which outlines the procedure for determining
compliance with cleanliness requirements by the magnetic particle inspection method.

MIL-T-6736, Alloy 4130 
Chemical composition (%) Carbon (C) 0.27~0.33
Manganese (Mn) 0.40~0.60
Phosphorus (P) 0.025 max
Sulfur (S) 0.025 max
Silicon (Si) 0.20~0.35
Chromium (Cr) 0.80~1.10
Molybdenum (Mo) 0.15~0.25

 

Alloy 4130 Normalized or Stress Relieved Tensile Strength (psi) Yield strength (psi) Elongation (%)
t≤0.035″ 95000 75000 10
0.035″<t≤0.187″ 95000 75000 12
t>0.187″ 95000 70000 15

 

AISI-SAE

MIL-T-6736 Normalized, 4130 Tube, Aircraft Quality Steel

 

스틸맥스는 연구소 수준의
깊이있는 철강에 대한 이해를 바탕으로,

Carbon Steel, Special Steel, Stainless, Functional,
Ni-Alloy, Cu-, Al-, Co-, Ti-, Mg-, Metal, Forging.

Plate, Sections, H-Beam, Round, Angle, Channel,
Rail, Crane Rail, Flat, I-Beam, Pipe & Tube, SMLS.

ASTM, ASME, AISI, API, SAE, AMS, KS, JIS, CSA,
DIN-EN, NORSOK, DNV, ABS, GL, LR, KR, NK, RS.

국가규격, 국제단체 규격, 국제협회 규격부터
Mill Maker Standards까지 공급하고 있습니다.

Citius, Altius, Fortius,
더 빠르게, 더 높이, 더 강하게가 요구되는 올림픽처럼

공급이 어려운 철강재 공급에는
진정한 전문 선수를 필요로 합니다.