ASTM A536, Spheroidal Graphite Iron Casting
2019년 1월 9일
ASTM, ASME Pipe, Tube Standard, Seamless
2019년 1월 9일
A564-B24 Alloy Steel Bolting for Special
STEELMAX Steel Story
A564 Standard Specification for
Alloy Steel Bolting for Special Applications 규정입니다.
Ni+Cr+Mo 합금강으로
얼핏 보면 JIS/KS의 SNCM439 같아 보이지만
다른 강재임에
유의해야 합니다.
※ Alloy steel
A Carbon steel to which is added a definite amount of one or more
elements other than carbon, in order to impart special properties
to the steel so that it can be used for specific purposes.
강의 성질을 향상 시키기 위해, 또는 소정의 성질을 구비 시키기 위해
합금 원소를 1종 또는 2종 이상을 합금 시킨 강.
※ Steel (강 : 鋼)
Iron, malleable in at least one range of temperature below its melting
point without special heat treatment, substantially free from slag, and
containing carbon more than about 0.05% and less than about 2.00%.
Other alloying elements may be present in significant quantities, but
all steels contain at least small amounts of manganese and silicon,
and usually as undesirable constituents, also sulfur and phosphorus.
Steel can be classified on the base of :
– Composition (carbon steel, low alloy steel, high alloy steel, etc.)
– Finishing method (hot rolled steel, cold rolled steel, PM steel, cast steel, etc.)
– Production form (plate, sheet, strip, bar, h-beam, rail, etc.)
– Type of application (construction steel, shipbuilding steel, tool steel, etc.)
| Identification Symbol/Grade | ASTM A540 B24 Cl.3 / 4340 Mod | |
| Chemical Composition (%) | Carbon (C) | 0.37~0.44 |
| Manganese (Mn) | 0.70~0.90 | |
| Phosphorus (P) | 0.025 max | |
| Sulfur (S) | 0.025 max | |
| Silicon (Si) | 0.15~0.35 | |
| Chromium (Cr) | 0.70~0.95 | |
| Nickel 9Ni) | 1.65~2.00 | |
| Molybdenum (Mo) | 0.30~0.40 | |
| Yield strength | Class 3 | 130 ksi (895 MPa) min |
| Tensile strength | Class 3 | 145 ksi (1000 MPa) min |
| Elongation (%) | Class 3 | 12 |
| Hardness (BHN) | t＜75 | 293~363 |
| t≤75＜200 | 302~388 | |
A564-B24 Alloy steel Bolting for Special
스틸맥스는 연구소 수준의
깊이 있는 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.
