Architects wrap buildings with Stainless Steel

With the pollen-rich landscapes of spring we discussed in our last post behind us and the sweltering days of summer beating down on our heads, the draw of cool shoreline breezes is tempting. What the casual beachgoer may not know, however, is that these waterfront locales often present challenging conditions that require special material applications to stand up to Mother Nature and ensure the longevity of coastal designs. Stainless steel plays a starring role in this success.

A popular medium in many design fields, stainless steel’s sleek finish and sharp lines appeal to both modern and contemporary sensibilities. Architects wrap buildings with it, industrial designers cloak gadgets in it, jewelry designers fashion accessories from it, and interior designers select it for kitchen sinks. Its corrosion-resistant properties also make it the best option for exterior applications in waterfront environments, compared to other metals (steel, galvanized steel, CORTEN steel, aluminum, iron, and bronze),— especially for brackish and saline waterways such as those of New York City’s coastal areas.

For our Hudson River Park Tribeca Section project, we designed a stainless steel railing at the pier’s edge, contributing to the installation’s longevity while enhancing the finish and aesthetic of this safety feature. Other cost-effective metals, like powder-coated or galvanized steel, were used for the park’s interior spaces. When designing with stainless steel, it is important that all attached metals, including connectors, fasteners, and anchors, are of the same material. Dissimilar metals in contact with stainless steel will accelerate corrosion and reduce the strength and lifespan of the product. This reaction is known as galvanic corrosion—a topic we’ll cover in a future post.

Steel Plate Product:

Stainless steel is available in a multitude of grades, each classified based on the percentages of the various alloy components present in the product. Altering the alloy content affects the metal’s characteristics, including its strength, corrosion resistance, brittleness, magnetism, etc. For example, Type 304 is the most widely used grade of the metal in landscape applications, whereas Type 420 is utilized for cutlery. Type 316 stainless steel, which has greater nickel content than Type 304, offers enhanced corrosion resistance in saline environments and is therefore typically specified for marine and waterfront landscape installations. Type 316 is slightly more expensive compared to Type 304, due to its alloy content, but its durability makes it a valuable investment. Type 316 stainless steel was used at our Hunts Point Landing project in the Bronx due to its proximity to Long Island Sound—a brackish waterway—whereas Type 304 was used at noteworthy non-marine projects including St. Louis’s Gateway Arch and New York City’s Unisphere.

Beyond the corrosion resistance and notable strength of stainless steel, the breadth of available finishes and forms is another appealing aspect of this metal for designers. It is available in multiple finishes ranging from the highly polished look often used for interior applications or jewelry, to brushed finishes that more easily camouflage fingerprints and light debris, to a bead blast—almost matte—finish. Bead blast finish works well in exterior applications, as it retains far less heat than polished surfaces—no one wants to sit on a scalding hot bench as they catch a summer breeze off the water! At our Fulton Landing Pier, a number of forms and finishes were integrated into the project’s decorative railing, including polished or blasted stainless steel pipes, plates, cables and anchors, which enhanced its aesthetic appeal.

Thanks to improved technology, stainless steel plate can be cut to almost any shape, freeing the designer from right angles, straight edges, or measured radii. Designers can provide their design drawings to fabricators who can then perfectly transform their 2D schematics into 3D forms via laser and water jet cutters. Our West Thames Park in Battery Park City incorporates stainless steel mesh and rods into a colorfully painted steel shade structure that provides dappled shade for now—until its twining vines are able to provide a dense canopy, woven throughout the overhead structure.

Appropriate material selection is integral to the success and longevity of built environments. Also crucial to the success of a landscape, yet seldom discussed, is soil. Hidden out of sight below plants, mulch, and pavement, this vital material will be addressed in our next post.

Source:  metropolismag.com

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Terrie Brightman, RLA, ASLA is a practicing landscape architect at Mathews Nielsen Landscape Architects in New York City with nine years of professional experience. Since receiving her BLA from the Pennsylvania State University, she has worked on riverfronts in Pittsburgh, private residences in California and Florida, a sustainable community in Turkey, and multiple public parks, plaza and waterfronts throughout New York City. 

Creusabro 4800 & 8000

Characteristic

For wear and tear which is not only caused by impact and friction, we provide CREUSABRO 4800 and CREUSABRO 8000. These products have TRIP (Transformation Induced by Plasticity) character and micro carbides that make this product have an active surface resistance, so that this material can last better if there is an impact. This product o can also be used in medium temperature 250–450 C, where other resistance product which generates from water quenched process usually will not be functioning optimally.

Creusabro 4000
The new Creusabro concept-excellent ability to work harden and contribution of micro carbides-gives Creusabro 4000 high wear resistance, on average 4 times higher than ordinary mild steel and 30 % higher than conventional 4000 BHN water quenched steel.

To ease in fabricating, Creusabro 4000 is supplied by approximately 360 HB hardness. After the fabrication, the hardness of Creusabro 4000 can be reach 420 HB.

Chemical Composition:

C : 0.20 max
Mn : 1.40
Cr : 0.85 min
Mo : 0.10 min
Ni : 0.30
S : 0.010 max
P : 0.018 max

Applications:
Mines: Extractors, Unloaders, Spiral Chutes. Crusher, Grinders, Screens, Conveyor
Quarries and Construction Earth Moving: Shovels, Diggers, Graders, Bulldozers, Dumpers, Dredging machines, Crushers, Grinders, Screens, Hoppers, Mixers, Molds for concrete aggregates
Cement Plants, Refractory Products: Crushers, Hoppers, Chutes, Cyclone, Wheel Excavator Buckets Metallurgical Plant, Scrap recovery, etc

The Creusabro concept-excellent ability to work harden and the supplementary contribution of microcarbides, already used in Creusabro 4000 has been improved in the Creusabro 8000. this grade takes advantage of an additional metal working process: the TRIP effect (Transformation Induce by Plasticity). The combination of this properties give to the Creusabro 8000 an exceptional wear resistance in heavy plates with uniform properties throughout the thickness around 8 times that of the standard mild steel (A572 G65 grade). The properties in extreme conditions are 50% superior to standard water quenched steel (hardness 500HB).

Creusabro 8000

Creusabro 8000 is supplied with the hardness of 420 HB in order to easy the fabrication. After fabrication, the hardness of Creusabro 8000 can reach 540 HB.

Chemical Compositions:
C Mn Cr Mo Ni S P
0.280 max 1.60 max 1.60 max 0.20 min 0.40 0.005 max 0.015 max

Applications:

Mines, Coal mines: Extracting and load equipment, Hopper lateral liner plate, Helical gravity conveyor.
Quarries and Construction Earth Moving: Blades, Outside Stiffeners, Under teeth pads of loaders and shovel dippers, Crushers and Mills lateral armor plate, Feed crown-wheel, Sprocket-wheal.
Cement Plants: Liners for drier-tubes, Buckets, Hoppers, Clinker cooler outlet shields.
Iron and Steel Industry: Scrap recovery, Brick works, Agricultural equipment, etc.

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Plat FORA 400

Characteristic

FORA 400 is a water quenched maternistic steel, with a typical hardness of 400HB (42,5HRC), constituting a real answer to abrasive wear. Thanks to its toughness, its elevated hardness, its high yield strength, FORA 400 can be use wherever a wear resistance to wear by sliding or by moderate impacts is required. Moreover, FORA 400 is very easily welded and has a good forming properties thereby contributing to ease of fabrication.

Compared to conventional steels, such as S355, FORA 400 offers a real benefit to the equipment life times and permits a signifiant reduction in he design thickness since its wear resistance is up to 3 times longer than S355 grade.

Moreover, FORA 400 is very easily welded and has a good forming properties thereby contributing to ease of fabrication. This steel is particulary suitable for applications in quarries, construction industry, mines, cement plants, the iron and steel industry, etc.

Chemical Composition
C Mn Cr Mo S max P max
0.13 1.2 0.5 0.25 0.01 0.02

Applications
Quarries and Construction Earth Moving: Skimmers, crushers, screens, bunkers, bulldozers, etc.
Cement Plants: Buckets, crushers, bunkers, etc.
Mines, Coal mines: Excavator, winding and discharging machines, conveyors, etc.
Iron and steel industry: Bunkers, various casing, guide and shifting plates, etc.

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Related Wear Plates:

Jembatan Gantung Terpanjang di Dunia

Rusia meresmikan jembatan gantung terpanjang di dunia pada 2 Juli, investasi bernilai triliunan rupiah ini berupaya untuk menghidupkan aktivitas ekonomi di kawasan Timur Jauh. Berikut gambar-gambarnya:

Sumber: AFP News

Beyond Steel Equivalent

Beyond-steel Comparison

Thyssen JIS
AISI Bohler ASSAB Atlas DIN
Balfour/ Rochling
Thyssen 1191 S45C 1045 EMS45 760 CM/ RMS30 CK45/ C45 1040/ 45
Thyssen 7225 SCM440 4140 VCL140 709 SPS 42CrMo4 SD19/ 4140
Thyssen 6582 SNCM439 4340 VCN150 705 Ultimo 200 34NiCrMo6 SD50 MONIX15
Thyssen 6580 Moulrex A
Thyroplast 2311 P20
Thyroplast 2312 P20+S Starmould Ultimo 200 PM53
Thyroplast 2767 AHT28
8620 SNCM220 8620 EPB100 En351 Impacto SD16 SD16B
En36A SNC815 3310 E200ES Special En36 Super Impacto SD51
En39B SNCM815
Thyroplast 2764 P21
Thyssen 2379 SKD 11 D2 X155Cr VMo1221
Thyssen 2344 SKD 61 H13 X40CrMoV51
Thyssen 2510 SKS 3 O1 100MnCrW4

The Classification of the Steel

Iron System

Specification

JIS Standards

AISI/ASTM Standards

Low Temperature
Carbon Steel
&
Low Alloy Steel

Low Temperature
Carbon Steel

S10C

AISI 1010

S15C

AISI 1015

S20C

AISI 1020

S25C

AISI 1025

S35C

AISI 1035

S45C

AISI 1045

S55C

AiSI 1055

Cr Steel

SCr 415

Cr-Mo Steel

SCM 415

SCM 435

AISI 4135

SCM 440

AISI 4140

Ni-Cr Steel

SNC 415

SNC 631

Ni-Cr-Mo Steel

SNCM 220

AISI 8620

SNCM 439

AISI 4340

Stainless Steel
&
Heat Resistant Steel

13Cr Steel

SCS 1 (SUS 410)

ASTM A217-CA15

SCS 2 (SUS 420 J2)

ASTM A743-CA40

17Cr Steel

SUS 440 C

AISI 440C

17-4PH

SCS 24 (SUS 630)

ASTM A 747-CB7CU1

18Cr-8Ni Steel

SUS 303

AISI 303

SCS 13 (SUS 304)

ASTM A351-CF8

SCS 14 (SUS 316)

ASTM A351-CF8M

SCS 316L

ASTM A351-CF3M

Heat Resistant Steel

SCH 13

ASTM A297-HH

SCH 22

ASTM A351-HK 40

Tool Steel

Carbon Tool Steel

SK 5

AISI W 1-8

SK 3

AISI W 1-10

Low Alloy Tool Steel

SKS 3

SKD 11

AISI D2

SKD 61

AISI H13

Penelusuran Terkait: persamaan besi/baja,equivalent steel, spesifikasi terdekat,nearest equivalent,japan standard steel,europe standard steel

AISI Standards

AISI 1010
AISI 1015
AISI 1020
AISI 1025
AISI 1035
AISI 1045
AISI 1055
AISI 303
AISI 4135
AISI 4140
AISI 8620
AISI 4340
AISI 440C
AISI W 1-8
AISI W 1-10
AISI D2
AISI H13

ASTM Standards

ASTM A217-CA15
ASTM A743-CA40
ASTM A 747-CB7CU1
ASTM A351-CF8
ASTM A351-CF8M
ASTM A351-CF3M
ASTM A297-HH
ASTM A351-HK 40