What “the material” actually is
不锈钢 is sold as grades, not as a single substance. Chemistry Fe–Cr–Ni (±Mo, N, C), density ~8.0 g/cm³, heat band ~1400–1450 °C.
This atlas treats 不锈钢 as a system: mill route, coatings, tests and the cavity it sits in.
速览
~10.5%Cr min
304 / 316Icon
~15 W/m·KK
A1Fire
Cr2O3 passiveFilm
metalsFamily
不锈钢 is one of 32 materials in this atlas, grouped under metals: history, structure, measured properties, process routes, uses, safety and market — not a product catalogue.
Scores compare 不锈钢 with the rest of the atlas on strength, heat, fire behaviour, insulation, workability and circularity. They are editorial, not certificates.
Seven chapters follow. Fire and insulation claims name test families (Euroclass, ASTM E84, ISO 5660, KS F) rather than inventing a single safety number.
深入阅读
Deep dive: 不锈钢
不锈钢 (Fe–Cr–Ni (±Mo, N, C)) is a family of grades whose density ~8.0 g/cm³, heat band ~1400–1450 °C, and fire letter A1 metal.
Heat, fire and insulation
Conductivity note: ~15 W/m·K (austenitic). Insulation score 10/100 is relative to 32 entries — metals lose, VIPs and aerogels win.
Fire letter in editorial use: A1 metal. Do not equate A1 with “safe in a blaze” or E with “illegal”. Assemblies decide.
How it is made and used
Origin: 1913 Brearley / Strauss, Sheffield / Essen. The process chapter follows feedstock → conversion → forming → finish → install.
Uses span buildings to defence / safety. Pairings matter: steel.
Market and circularity
Producers below are landmarks, not an endorsement ranking. Prices are bands, not live quotes.
Circularity mark 68/100. Ask which scrap, which certificate, which year.
画像
强度
74
耐热
76
火灾性能
86
隔热
10
加工性
70
循环性
68
七章
常见问题
Is 不锈钢 non-combustible?
Declared reaction class in this atlas: A1 metal. Assemblies still need resistance tests.
Does 不锈钢 insulate?
Thermal mark 10/100 versus the atlas. Conductivity note: ~15 W/m·K (austenitic).
What is the density band?
~8.0 g/cm³
How is it made?
Origin story: 1913 Brearley / Strauss (Sheffield / Essen).
Can it be recycled?
Circularity mark 68/100 — editorial, route-specific.
Typical melting or failure heat?
~1400–1450 °C
What should it be paired with?
steel: The parent without the chromium film.
Where is it specified?
Buildings, transport, energy and consumer goods — see the uses chapter.
图标
Harry Brearley
United Kingdom · 1913
Harry Brearley is a reference point in the public image of 不锈钢.
Chrysler Building crown
United States · 1930
Chrysler Building crown is a reference point in the public image of 不锈钢.
Gateway Arch
United States · 1965
Gateway Arch is a reference point in the public image of 不锈钢.
304 sink
Global · postwar
304 sink is a reference point in the public image of 不锈钢.
Duplex riser
North Sea · 1980s–
Duplex riser is a reference point in the public image of 不锈钢.
Shinkansen skin bits
Japan · 1964–
Shinkansen skin bits is a reference point in the public image of 不锈钢.
Surgical 316L
Global · 20th c.–
Surgical 316L is a reference point in the public image of 不锈钢.
Krupp V2A
Germany · 1912
Krupp V2A is a reference point in the public image of 不锈钢.
开关图标后，柱会按所选集合的领先者重新缩放。
5 / 8
对决
同一家族、不同分数 — 选一场。
相近材料
六轴上最近的邻居 — 强度、耐热、火灾、隔热、加工性、循环性。