--- title: "PZhR5 — Unalloyed structural steels" description: "PZhR5 in GOST: material number 1.0050, also listed as St 50-2. Category: Unalloyed structural steels. Designations recorded for this grade: 123." canonical: https://steelequivalents.com/materials/gost/pzhr5 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/gost/pzhr5.md cs: https://steelequivalents.com/cs/materiály/gost/pzhr5.md de: https://steelequivalents.com/de/werkstoffe/gost/pzhr5.md es: https://steelequivalents.com/es/materiales/gost/pzhr5.md fr: https://steelequivalents.com/fr/matériaux/gost/pzhr5.md hu: https://steelequivalents.com/hu/anyagok/gost/pzhr5.md it: https://steelequivalents.com/it/materiali/gost/pzhr5.md nl: https://steelequivalents.com/nl/materialen/gost/pzhr5.md pl: https://steelequivalents.com/pl/materiały/gost/pzhr5.md pt: https://steelequivalents.com/pt/materiais/gost/pzhr5.md ru: https://steelequivalents.com/ru/материалы/gost/pzhr5.md tr: https://steelequivalents.com/tr/malzemeler/gost/pzhr5.md zh: https://steelequivalents.com/zh/材料/gost/pzhr5.md ja: https://steelequivalents.com/ja/材料/gost/pzhr5.md ar: https://steelequivalents.com/ar/المواد/gost/pzhr5.md ko: https://steelequivalents.com/ko/재료/gost/pzhr5.md pt-br: https://steelequivalents.com/pt-br/materiais/gost/pzhr5.md hi: https://steelequivalents.com/hi/सामग्री/gost/pzhr5.md content_hash: sha256:982237a3f0d4f878870ec1fcfa9586c199e06189d755b405b79d8c85ee50ee1e generated: 2026-09-22 --- > **Machine-readable Markdown rendering.** This is a Markdown representation of a web page, > served for AI agents and crawlers as a token-efficient alternative to the full HTML. > Full interactive HTML version: https://steelequivalents.com/materials/gost/pzhr5 > Canonical URL: https://steelequivalents.com/materials/gost/pzhr5 > Available languages: en, cs, de, es, fr, hu, it, nl, pl, pt, ru, tr, zh, ja, ar, ko, pt-br, hi > Change detection: `content_hash` is the SHA-256 of this document's Markdown body — everything > below this block, whitespace-trimmed, excluding the front-matter. Compare it to detect a real > content change; `generated` moves on every render and is not a change signal. GOST · Russia / CIS · 123 designations # PZhR5 PZhR5 is a designation in GOST for the material held under material number 1.0050, also listed as St 50-2. It is a material in the category Unalloyed structural steels. We list 123 designations recorded for this grade, in the standards DIN / EN, AISI / SAE, ASTM, BS, AFNOR, UNE, ISO, JIS, GB, GOST, UNI, SS, ČSN, STN, SRPS, PN, MSZ, STAS, BDS, ÖNORM, NBN, SFS, SNV and KS. - [*Material no.* **1.0050**](/materials/material-no/1.0050 "Material no.: 1.0050") - [*Category* **Unalloyed structural steels · 452 grades**](/categories/unalloyed-structural-steels "Category: Unalloyed structural steels · 452 grades") - *Designations* **123** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=4add6368-2e2f-4cc5-a9a2-6332bdab163e&designation=d6e099d8-477f-493a-b4c8-6b9b2a0823cd "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gost/pzhr5.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN E295 This grade’s own name · 2 grades on that route](/materials/din-en/e295 "DIN / EN E295") - [KS SPHE This grade’s own name · 2 grades on that route](/materials/ks/sphe "KS SPHE") ## About Unalloyed structural steels Unalloyed structural steels include all low-carbon steels in which the iron companions do not exceed specified minimum values. The yield strength, formability and weldability are the decisive factors for their use. They are soft, pliable, tough and stretchy, but cannot be hardened by heat treatment. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Also known as 123 designations · 24 standards · nothing hidden This grade’s own name recorded in our sources as this grade’s own designation under that standard. Indicative taken from a published cross-reference table; a close match, not a guarantee of interchangeability. Verify against the mill certificate before ordering. Withdrawn designation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once. Superseded by the current name this withdrawn designation was replaced by — the same grade under its present designation, the one to order by today. DIN / EN Europe · 3 - [E295 This grade’s own name](/materials/din-en/e295 "DIN / EN E295") - [Fe490-2 Indicative](/materials/msz/fe490-2 "DIN / EN Fe490-2") - [St 50-2 This grade’s own name Withdrawn](/materials/snv/st50-2 "DIN / EN St 50-2")Superseded by[E295GF](/materials/din-en/e295gf "E295GF") AISI / SAE United States · 9 - [A570 Indicative](/materials/aisi-sae/a570 "AISI / SAE A570") - [A570(50) Indicative](/materials/aisi-sae/a570-50 "AISI / SAE A570(50)") - [A570Gr.50 Indicative](/materials/aisi-sae/a570gr-50 "AISI / SAE A570Gr.50") - [A572 Indicative](/materials/astm/a572 "AISI / SAE A572") - [A572(50) Indicative](/materials/aisi-sae/a572-50 "AISI / SAE A572(50)") - [A572Gr.50 Indicative](/materials/aisi-sae/a572gr-50 "AISI / SAE A572Gr.50") - [Gr.50 Indicative](/materials/aisi-sae/gr-50 "AISI / SAE Gr.50") - [K02305 Indicative](/materials/uns/k02305 "AISI / SAE K02305") - [K02507 Indicative](/materials/uns/k02507 "AISI / SAE K02507") ASTM United States · 3 - [A 570 Grade 50 Indicative](/materials/astm/a-570-grade-50 "ASTM A 570 Grade 50") - [A 622 Indicative](/materials/aisi-sae/a622 "ASTM A 622") - [A570 Indicative](/materials/aisi-sae/a570 "ASTM A570") BS United Kingdom · 7 - [1449 1 HR Indicative](/materials/bs/1449-1hr "BS 1449 1 HR") - [43/35HS Indicative](/materials/bs/43-35hs "BS 43/35HS") - [4360-50B Indicative](/materials/bs/4360-50b "BS 4360-50B") - [50B Indicative](/materials/gb/50b "BS 50B") - [BS 1449 1 HR Indicative](/materials/bs/bs-1449-1-hr "BS BS 1449 1 HR") - [E295 Indicative](/materials/din-en/e295 "BS E295") - [Fe490-2FN Indicative](/materials/bs/fe490-2fn "BS Fe490-2FN") AFNOR France · 6 - [3C Indicative](/materials/afnor/3c "AFNOR 3C") - [A50 Indicative](/materials/afnor/a50 "AFNOR A50") - [A50-2 Indicative](/materials/astm/a502 "AFNOR A50-2") - [A60-2 Indicative](/materials/afnor/a60-2 "AFNOR A60-2") - [E295 Indicative](/materials/din-en/e295 "AFNOR E295") - [А 50-2 Indicative](/materials/astm/a502 "AFNOR А 50-2") UNE Spain · 4 - [A490 Indicative](/materials/une/a490 "UNE A490") - [A490-2 Indicative](/materials/une/a490-2 "UNE A490-2") - [E295 Indicative](/materials/din-en/e295 "UNE E295") - [Fe490-2FN Indicative](/materials/bs/fe490-2fn "UNE Fe490-2FN") ISO International · 3 - [E355-C Indicative](/materials/afnor/e355c "ISO E355-C") - [Fe490 Indicative](/materials/iso/fe490 "ISO Fe490") - [Fe510-C Indicative](/materials/uni/fe510c "ISO Fe510-C") JIS Japan · 3 - [SS 50 Indicative](/materials/jis/ss-50 "JIS SS 50") - [SS490 Indicative](/materials/jis/ss490 "JIS SS490") - [SS500 Indicative](/materials/jis/ss500 "JIS SS500") GB China · 3 - [Q275 Indicative](/materials/gb/q275 "GB Q275") - [Q275Z Indicative](/materials/gb/q275z "GB Q275Z") - [Q345C Indicative](/materials/gb/q345c "GB Q345C") GOST Russia / CIS · 53 - [08Fkp Indicative](/materials/gost/08fkp "GOST 08Fkp") - [08GBYu Indicative](/materials/gost/08gbyu "GOST 08GBYu") - [08GDNF Indicative](/materials/gost/08gdnf "GOST 08GDNF") - [08GDNFL Indicative](/materials/gost/08gdnfl "GOST 08GDNFL") - [08KhGSBDP Indicative](/materials/gost/08khgsbdp "GOST 08KhGSBDP") - [08KhGSDP Indicative](/materials/gost/08khgsdp "GOST 08KhGSDP") - [08KhMChA Indicative](/materials/gost/08khmcha "GOST 08KhMChA") - [08KhMFChA Indicative](/materials/gost/08khmfcha "GOST 08KhMFChA") - [08KhMFchYuA Indicative](/materials/gost/08khmfchyua "GOST 08KhMFchYuA") - [08YuA Indicative](/materials/gost/08yua "GOST 08YuA") - [08кп Indicative](/materials/gost/08kp "GOST 08кп") - [08ХМФЧ Indicative](/materials/gost/08khmfch "GOST 08ХМФЧ") - [08ХМЧ Indicative](/materials/gost/08khmch "GOST 08ХМЧ") - [30HG1 Indicative](/materials/gost/30hg1 "GOST 30HG1") - [30ХГ1 Indicative](/materials/gost/30khg1 "GOST 30ХГ1") - [5KHGM Indicative](/materials/gost/5khgm "GOST 5KHGM") - [5KHNVS Indicative](/materials/gost/5khnvs "GOST 5KHNVS") - [5МФРЛ Indicative](/materials/gost/5mfrl "GOST 5МФРЛ") - [CHS5 Indicative](/materials/gost/chs5 "GOST CHS5") - [CHS5SH Indicative](/materials/gost/chs5sh "GOST CHS5SH") - [L5 Indicative](/materials/gost/l5 "GOST L5") - [LR5 Indicative](/materials/gost/lr5 "GOST LR5") - [PA-ZhD5 Indicative](/materials/gost/pa-zhd5 "GOST PA-ZhD5") - [PA-ZhGrD5 Indicative](/materials/gost/pa-zhgrd5 "GOST PA-ZhGrD5") - **PZhR5 Indicative** - [PZhV5 Indicative](/materials/gost/pzhv5 "GOST PZhV5") - [S285 Indicative](/materials/gost/s285 "GOST S285") - [St5Gps Indicative](/materials/gost/st5gps "GOST St5Gps") - [St5ps Indicative](/materials/gost/st5ps "GOST St5ps") - [St5sp Indicative](/materials/gost/st5sp "GOST St5sp") - [Sv-08 Indicative](/materials/gost/sv-08 "GOST Sv-08") - [Sv-08A Indicative](/materials/gost/sv-08a "GOST Sv-08A") - [Sv-08AA Indicative](/materials/gost/sv-08aa "GOST Sv-08AA") - [Sv-08GA Indicative](/materials/gost/sv-08ga "GOST Sv-08GA") - [Sv-08GS Indicative](/materials/gost/sv-08gs "GOST Sv-08GS") - [Sv-08GSMT Indicative](/materials/gost/sv-08gsmt "GOST Sv-08GSMT") - [Sv-08KhGSMA Indicative](/materials/gost/sv-08khgsma "GOST Sv-08KhGSMA") - [Sv-08KhGSMFA Indicative](/materials/gost/sv-08khgsmfa "GOST Sv-08KhGSMFA") - [Sv-08KhM Indicative](/materials/gost/sv-08khm "GOST Sv-08KhM") - [Sv-08KhMFA Indicative](/materials/gost/sv-08khmfa "GOST Sv-08KhMFA") - [Sv-08KhMNFBA Indicative](/materials/gost/sv-08khmnfba "GOST Sv-08KhMNFBA") - [Sv-08KhNM Indicative](/materials/gost/sv-08khnm "GOST Sv-08KhNM") - [Sv-08MKh Indicative](/materials/gost/sv-08mkh "GOST Sv-08MKh") - [VSt5sp Indicative](/materials/gost/vst5sp "GOST VSt5sp") - [ЖГр0.25Д5 Indicative](/materials/gost/zhgr0-25d5 "GOST ЖГр0.25Д5") - [ЖГр1.5Д10 Indicative](/materials/gost/zhgr1-5d10 "GOST ЖГр1.5Д10") - [ЖГр1.5Д5 Indicative](/materials/gost/zhgr1-5d5 "GOST ЖГр1.5Д5") - [ЖД10 Indicative](/materials/gost/zhd10 "GOST ЖД10") - [ЖД5 Indicative](/materials/gost/zhd5 "GOST ЖД5") - [МЖГ1 Indicative](/materials/gost/mzhg1 "GOST МЖГ1") - [С285 Indicative](/materials/gost/s285 "GOST С285") - [ст.08кп Indicative](/materials/gost/st-08kp "GOST ст.08кп") - [Ст5сп Indicative](/materials/gost/st5sp "GOST Ст5сп") UNI Italy · 3 - [E295 Indicative](/materials/din-en/e295 "UNI E295") - [Fe480 Indicative](/materials/uni/fe480 "UNI Fe480") - [Fe490 Indicative](/materials/iso/fe490 "UNI Fe490") SS Sweden · 4 - [1550 Indicative](/materials/ss/1550 "SS 1550") - [1550-00 Indicative](/materials/ss/1550-00 "SS 1550-00") - [1550-01 Indicative](/materials/ss/1550-01 "SS 1550-01") - [2172 Indicative](/materials/ss/2172 "SS 2172") ČSN Czechia · 2 - [10 500 Hž Indicative](/materials/csn/10-500-hz "ČSN 10 500 Hž") - [11500 Indicative](/materials/csn/11500 "ČSN 11500") STN Slovakia · 1 - [11 500 Indicative](/materials/csn/11500 "STN 11 500") SRPS Serbia · 1 - [Č.0545 Indicative](/materials/srps/c-0545 "SRPS Č.0545") PN Poland · 2 - [MSt5 Indicative](/materials/pn/mst5 "PN MSt5") - [St5 Indicative](/materials/pn/st5 "PN St5") MSZ Hungary · 3 - [A 50 Indicative](/materials/afnor/a50 "MSZ A 50") - [E295 Indicative](/materials/din-en/e295 "MSZ E295") - [Fe490-2 Indicative](/materials/msz/fe490-2 "MSZ Fe490-2") STAS Romania · 1 - [OL50.1 Indicative](/materials/stas/ol50-1 "STAS OL50.1") BDS Bulgaria · 4 - [ASt5 Indicative](/materials/bds/ast5 "BDS ASt5") - [E295 Indicative](/materials/din-en/e295 "BDS E295") - [WSt5ps Indicative](/materials/bds/wst5ps "BDS WSt5ps") - [WSt5sp Indicative](/materials/bds/wst5sp "BDS WSt5sp") ÖNORM Austria · 2 - [St490 Indicative](/materials/onorm/st490 "ÖNORM St490") - [St50F Indicative](/materials/onorm/st50f "ÖNORM St50F") NBN Belgium · 2 - [A490-1.2 Indicative](/materials/nbn/a490-1-2 "NBN A490-1.2") - [FE490-2FN Indicative](/materials/bs/fe490-2fn "NBN FE490-2FN") SFS Finland · 1 - [Fe50 Indicative](/materials/sfs/fe50 "SFS Fe50") SNV Switzerland · 1 - [St50-2 Indicative](/materials/snv/st50-2 "SNV St50-2") KS South Korea · 2 - [SPHE This grade’s own name](/materials/ks/sphe "KS SPHE") - [SS490 Indicative](/materials/jis/ss490 "KS SS490") Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here. ## Chemical composition 3 elements on file · weight % What this alloy is Fe P S N Iron — the balance, never listed by a standard — 99.9 % P — 0 % S — 0 % N — 0 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | P | 0.045 | | S | 0.045 | | N | 0.012 | Phosphorus Sulfur Nitrogen 0.01 % 0.1 % 1 % 10 % 100 % The scale is logarithmic, not the element’s raw share of the alloy — the only honest way to fit 0.01 % and 100 % in one picture, and it means every value here can be compared with every other. | Element | As published source text, verbatim | Min% by weight | Max% by weight | Bound | |---|---|---|---|---| | N | 0,012 | 0.012 | 0.012 | Exact | | P | 0,045 | 0.045 | 0.045 | Exact | | S | 0,045 | 0.045 | 0.045 | Exact | The published column is the source string byte-for-byte, decimal comma and all; Min and Max are the parsed bounds. Elements not listed have no value on file — they are omitted, never inferred. ## Predicted transformation temperatures Not enough recorded composition to predict a transformation temperature for this grade — missing: C, Mn, Si, Ni, Cr, Mo. ## Physical & mechanical properties Density 7,85 g/cm³ Exact Transformation point Ac1 730 °C Exact Transformation point Ac3 825 °C Exact · Ac3(Acm) Transformation point Ar3 815 °C Exact · Ar3(Arcm) Transformation point Ar1 690 °C Exact Weldability weldable with restrictions As published: limited weldability. Flake sensitivity not susceptible As published: not predisposed Temper brittleness not susceptible As published: not predisposed An absent property means we hold no value for it — it is left out rather than estimated, interpolated from a neighbouring grade, or filled from a handbook. It does not mean the property is undefined for the material. ## Properties by condition 4 conditions · 42 values By thickness**flat and long products** source `steelnumber` | Thickness mm | ReH N/mm² | Rm N/mm² | |---|---|---| | ≤ 3 | — | 490 – 660 | | 3 – 100 | — | 470 – 610 | | ≤ 16 | 295 | — | | 16 – 40 | 285 | — | | 40 – 63 | 275 | — | | 63 – 80 | 265 | — | | 80 – 100 | 255 | — | | 100 – 150 | 245 | 450 – 610 | | 150 – 250 | — | 440 – 610 | | 150 – 200 | 235 | — | By thickness**no delivery state stated** source `steelnumber` | Thickness mm | A80% · Lo = 80 mm | A% · Lo = 5,65 √So | |---|---|---| | ≤ 1 | 12 | — | | 1 – 1.5 | 13 | — | | 1.5 – 2 | 14 | — | | 2 – 2.5 | 15 | — | | 2.5 – 3 | 16 | — | | 3 – 40 | — | 20 | | 40 – 63 | — | 19 | | 63 – 100 | — | 18 | | 100 – 150 | — | 16 | | 150 – 250 | — | 15 | By dimension**Normalizing** source `splav` | Dimension mm | Rm N/mm² | Re N/mm² | A5% | Z% | KCU kJ/m² | |---|---|---|---|---|---| | 100 - 300 | 350 | 175 | 24 | 50 | 590 | | 300 - 500 | 350 | 175 | 22 | 45 | 540 | | 500 - 800 | 350 | 175 | 20 | 40 | 490 | At temperature**no delivery state stated** source `splav` | Temperature °C | Density g/cm³ | Elastic modulus GPa | |---|---|---| | 20 | 7.85 | 198 | | 100 | — | 196 | | 200 | — | 191 | | 300 | — | 185 | | 400 | — | 164 | Every figure holds only for the condition on its own row. Values are never merged across conditions or across sources, never averaged, and never interpolated between two rows. An em dash means no value on file — never zero. Figures are converted to the unit in the column header; the source’s own wording is kept and shown where the two differ. ## Looking for this grade under another name? Search the catalogue by designation, material number or composition — every name on this page is itself a way in. [Search](/search "Steel grade search")[Inquiry](/inquiry?material=4add6368-2e2f-4cc5-a9a2-6332bdab163e&designation=d6e099d8-477f-493a-b4c8-6b9b2a0823cd "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gost/pzhr5.pdf "Datasheet as PDF")